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Finding the Fourth Proportional to 511,250.10, 766,875.15 and 287,301.30

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Solution

The fourth proportional to 511,250.10, 766,875.15 and 287,301.30 is: 430,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,250.10 : 766,875.15 = 287,301.30 : x
  2. Step 2: Convert to fraction form
    511,250.10/766,875.15 = 287,301.30/x
  3. Step 3: Cross multiply
    511,250.10x = 766,875.15 × 287,301.30
  4. Step 4: Simplify right side
    511,250.10x = 220,324,227,532.70
  5. Step 5: Solve for x
    x = 220,324,227,532.70/511,250.10
  6. Step 6: Final answer
    x = 430,951.95

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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.