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Finding the Fourth Proportional to 423,708.77, 635,564.18 and 103,862.07

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Solution

The fourth proportional to 423,708.77, 635,564.18 and 103,862.07 is: 155,793.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,708.77 : 635,564.18 = 103,862.07 : x
  2. Step 2: Convert to fraction form
    423,708.77/635,564.18 = 103,862.07/x
  3. Step 3: Cross multiply
    423,708.77x = 635,564.18 × 103,862.07
  4. Step 4: Simplify right side
    423,708.77x = 66,011,013,545.89
  5. Step 5: Solve for x
    x = 66,011,013,545.89/423,708.77
  6. Step 6: Final answer
    x = 155,793.36

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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.