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Finding the Fourth Proportional to 424,402.54, 636,604.01 and 108,859.55

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Solution

The fourth proportional to 424,402.54, 636,604.01 and 108,859.55 is: 163,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,402.54 : 636,604.01 = 108,859.55 : x
  2. Step 2: Convert to fraction form
    424,402.54/636,604.01 = 108,859.55/x
  3. Step 3: Cross multiply
    424,402.54x = 636,604.01 × 108,859.55
  4. Step 4: Simplify right side
    424,402.54x = 69,300,422,737.70
  5. Step 5: Solve for x
    x = 69,300,422,737.70/424,402.54
  6. Step 6: Final answer
    x = 163,289.37

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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.