Home / 386,531.75-533,439.05-223,195.15

Finding the Fourth Proportional to 386,531.75, 533,439.05 and 223,195.15

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Solution

The fourth proportional to 386,531.75, 533,439.05 and 223,195.15 is: 308,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,531.75 : 533,439.05 = 223,195.15 : x
  2. Step 2: Convert to fraction form
    386,531.75/533,439.05 = 223,195.15/x
  3. Step 3: Cross multiply
    386,531.75x = 533,439.05 × 223,195.15
  4. Step 4: Simplify right side
    386,531.75x = 119,061,008,780.61
  5. Step 5: Solve for x
    x = 119,061,008,780.61/386,531.75
  6. Step 6: Final answer
    x = 308,023.88

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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.