Home / 278,849.50-384,781.08-157,964.90

Finding the Fourth Proportional to 278,849.50, 384,781.08 and 157,964.90

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Solution

The fourth proportional to 278,849.50, 384,781.08 and 157,964.90 is: 217,973.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,849.50 : 384,781.08 = 157,964.90 : x
  2. Step 2: Convert to fraction form
    278,849.50/384,781.08 = 157,964.90/x
  3. Step 3: Cross multiply
    278,849.50x = 384,781.08 × 157,964.90
  4. Step 4: Simplify right side
    278,849.50x = 60,781,904,824.09
  5. Step 5: Solve for x
    x = 60,781,904,824.09/278,849.50
  6. Step 6: Final answer
    x = 217,973.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.