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Finding the Fourth Proportional to 465,456.72, 698,171.13 and 128,517.93

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Solution

The fourth proportional to 465,456.72, 698,171.13 and 128,517.93 is: 192,773.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,456.72 : 698,171.13 = 128,517.93 : x
  2. Step 2: Convert to fraction form
    465,456.72/698,171.13 = 128,517.93/x
  3. Step 3: Cross multiply
    465,456.72x = 698,171.13 × 128,517.93
  4. Step 4: Simplify right side
    465,456.72x = 89,727,508,413.36
  5. Step 5: Solve for x
    x = 89,727,508,413.36/465,456.72
  6. Step 6: Final answer
    x = 192,773.04

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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.