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Finding the Fourth Proportional to 423,710.27, 635,566.43 and 103,863.57

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Solution

The fourth proportional to 423,710.27, 635,566.43 and 103,863.57 is: 155,795.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,710.27 : 635,566.43 = 103,863.57 : x
  2. Step 2: Convert to fraction form
    423,710.27/635,566.43 = 103,863.57/x
  3. Step 3: Cross multiply
    423,710.27x = 635,566.43 × 103,863.57
  4. Step 4: Simplify right side
    423,710.27x = 66,012,198,651.61
  5. Step 5: Solve for x
    x = 66,012,198,651.61/423,710.27
  6. Step 6: Final answer
    x = 155,795.61

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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.