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Finding the Fourth Proportional to 518,272.22, 714,971.21 and 303,279.19

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Solution

The fourth proportional to 518,272.22, 714,971.21 and 303,279.19 is: 418,382.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,272.22 : 714,971.21 = 303,279.19 : x
  2. Step 2: Convert to fraction form
    518,272.22/714,971.21 = 303,279.19/x
  3. Step 3: Cross multiply
    518,272.22x = 714,971.21 × 303,279.19
  4. Step 4: Simplify right side
    518,272.22x = 216,835,886,138.30
  5. Step 5: Solve for x
    x = 216,835,886,138.30/518,272.22
  6. Step 6: Final answer
    x = 418,382.23

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Half scale
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Double scale
Find fourth proportional to 518,273.22, 714,972.58 and 303,280.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.