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Finding the Fourth Proportional to 518,193.78, 777,290.67 and 202,429.26

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Solution

The fourth proportional to 518,193.78, 777,290.67 and 202,429.26 is: 303,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,193.78 : 777,290.67 = 202,429.26 : x
  2. Step 2: Convert to fraction form
    518,193.78/777,290.67 = 202,429.26/x
  3. Step 3: Cross multiply
    518,193.78x = 777,290.67 × 202,429.26
  4. Step 4: Simplify right side
    518,193.78x = 157,346,375,133.00
  5. Step 5: Solve for x
    x = 157,346,375,133.00/518,193.78
  6. Step 6: Final answer
    x = 303,643.89

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.