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Finding the Fourth Proportional to 472,374.79, 708,348.95 and 135,338.29

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Solution

The fourth proportional to 472,374.79, 708,348.95 and 135,338.29 is: 202,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,374.79 : 708,348.95 = 135,338.29 : x
  2. Step 2: Convert to fraction form
    472,374.79/708,348.95 = 135,338.29/x
  3. Step 3: Cross multiply
    472,374.79x = 708,348.95 × 135,338.29
  4. Step 4: Simplify right side
    472,374.79x = 95,866,737,660.71
  5. Step 5: Solve for x
    x = 95,866,737,660.71/472,374.79
  6. Step 6: Final answer
    x = 202,946.35

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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.