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Finding the Fourth Proportional to 306,591.32, 423,115.92 and 170,624.87

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Solution

The fourth proportional to 306,591.32, 423,115.92 and 170,624.87 is: 235,473.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,591.32 : 423,115.92 = 170,624.87 : x
  2. Step 2: Convert to fraction form
    306,591.32/423,115.92 = 170,624.87/x
  3. Step 3: Cross multiply
    306,591.32x = 423,115.92 × 170,624.87
  4. Step 4: Simplify right side
    306,591.32x = 72,194,098,844.93
  5. Step 5: Solve for x
    x = 72,194,098,844.93/306,591.32
  6. Step 6: Final answer
    x = 235,473.39

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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.