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Finding the Fourth Proportional to 564,979.16, 847,470.15 and 138,516.90

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Solution

The fourth proportional to 564,979.16, 847,470.15 and 138,516.90 is: 207,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,979.16 : 847,470.15 = 138,516.90 : x
  2. Step 2: Convert to fraction form
    564,979.16/847,470.15 = 138,516.90/x
  3. Step 3: Cross multiply
    564,979.16x = 847,470.15 × 138,516.90
  4. Step 4: Simplify right side
    564,979.16x = 117,388,938,020.54
  5. Step 5: Solve for x
    x = 117,388,938,020.54/564,979.16
  6. Step 6: Final answer
    x = 207,775.70

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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.