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Finding the Fourth Proportional to 398,728.71, 597,416.04 and 240,624.95

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Solution

The fourth proportional to 398,728.71, 597,416.04 and 240,624.95 is: 360,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,728.71 : 597,416.04 = 240,624.95 : x
  2. Step 2: Convert to fraction form
    398,728.71/597,416.04 = 240,624.95/x
  3. Step 3: Cross multiply
    398,728.71x = 597,416.04 × 240,624.95
  4. Step 4: Simplify right side
    398,728.71x = 143,753,201,767.12
  5. Step 5: Solve for x
    x = 143,753,201,767.12/398,728.71
  6. Step 6: Final answer
    x = 360,528.85

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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.