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Finding the Fourth Proportional to 423,237.73, 634,920.38 and 123,680.70

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Solution

The fourth proportional to 423,237.73, 634,920.38 and 123,680.70 is: 185,539.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,237.73 : 634,920.38 = 123,680.70 : x
  2. Step 2: Convert to fraction form
    423,237.73/634,920.38 = 123,680.70/x
  3. Step 3: Cross multiply
    423,237.73x = 634,920.38 × 123,680.70
  4. Step 4: Simplify right side
    423,237.73x = 78,527,397,042.67
  5. Step 5: Solve for x
    x = 78,527,397,042.67/423,237.73
  6. Step 6: Final answer
    x = 185,539.69

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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.