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Finding the Fourth Proportional to 261,384.95, 391,445.90 and 148,723.88

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Solution

The fourth proportional to 261,384.95, 391,445.90 and 148,723.88 is: 222,726.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,384.95 : 391,445.90 = 148,723.88 : x
  2. Step 2: Convert to fraction form
    261,384.95/391,445.90 = 148,723.88/x
  3. Step 3: Cross multiply
    261,384.95x = 391,445.90 × 148,723.88
  4. Step 4: Simplify right side
    261,384.95x = 58,217,350,357.24
  5. Step 5: Solve for x
    x = 58,217,350,357.24/261,384.95
  6. Step 6: Final answer
    x = 222,726.49

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1.5x scale

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.