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Finding the Fourth Proportional to 424,069.20, 636,103.80 and 108,526.11

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Solution

The fourth proportional to 424,069.20, 636,103.80 and 108,526.11 is: 162,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,069.20 : 636,103.80 = 108,526.11 : x
  2. Step 2: Convert to fraction form
    424,069.20/636,103.80 = 108,526.11/x
  3. Step 3: Cross multiply
    424,069.20x = 636,103.80 × 108,526.11
  4. Step 4: Simplify right side
    424,069.20x = 69,033,868,584.83
  5. Step 5: Solve for x
    x = 69,033,868,584.83/424,069.20
  6. Step 6: Final answer
    x = 162,789.16

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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.