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Finding the Fourth Proportional to 423,688.28, 635,554.28 and 108,147.92

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Solution

The fourth proportional to 423,688.28, 635,554.28 and 108,147.92 is: 162,227.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,688.28 : 635,554.28 = 108,147.92 : x
  2. Step 2: Convert to fraction form
    423,688.28/635,554.28 = 108,147.92/x
  3. Step 3: Cross multiply
    423,688.28x = 635,554.28 × 108,147.92
  4. Step 4: Simplify right side
    423,688.28x = 68,733,869,710.59
  5. Step 5: Solve for x
    x = 68,733,869,710.59/423,688.28
  6. Step 6: Final answer
    x = 162,227.45

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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.