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Finding the Fourth Proportional to 278,800.68, 384,744.96 and 151,475.88

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Solution

The fourth proportional to 278,800.68, 384,744.96 and 151,475.88 is: 209,036.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,800.68 : 384,744.96 = 151,475.88 : x
  2. Step 2: Convert to fraction form
    278,800.68/384,744.96 = 151,475.88/x
  3. Step 3: Cross multiply
    278,800.68x = 384,744.96 × 151,475.88
  4. Step 4: Simplify right side
    278,800.68x = 58,279,581,391.56
  5. Step 5: Solve for x
    x = 58,279,581,391.56/278,800.68
  6. Step 6: Final answer
    x = 209,036.73

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1.5x scale

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.