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Finding the Fourth Proportional to 505,280.70, 757,921.05 and 239,560.20

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Solution

The fourth proportional to 505,280.70, 757,921.05 and 239,560.20 is: 359,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,280.70 : 757,921.05 = 239,560.20 : x
  2. Step 2: Convert to fraction form
    505,280.70/757,921.05 = 239,560.20/x
  3. Step 3: Cross multiply
    505,280.70x = 757,921.05 × 239,560.20
  4. Step 4: Simplify right side
    505,280.70x = 181,567,718,322.21
  5. Step 5: Solve for x
    x = 181,567,718,322.21/505,280.70
  6. Step 6: Final answer
    x = 359,340.30

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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.