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Finding the Fourth Proportional to 206,315.73, 309,479.47 and 93,937.95

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Solution

The fourth proportional to 206,315.73, 309,479.47 and 93,937.95 is: 140,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,315.73 : 309,479.47 = 93,937.95 : x
  2. Step 2: Convert to fraction form
    206,315.73/309,479.47 = 93,937.95/x
  3. Step 3: Cross multiply
    206,315.73x = 309,479.47 × 93,937.95
  4. Step 4: Simplify right side
    206,315.73x = 29,071,866,744.04
  5. Step 5: Solve for x
    x = 29,071,866,744.04/206,315.73
  6. Step 6: Final answer
    x = 140,909.60

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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.