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Finding the Fourth Proportional to 442,879.20, 664,318.80 and 162,505.80

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Solution

The fourth proportional to 442,879.20, 664,318.80 and 162,505.80 is: 243,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,879.20 : 664,318.80 = 162,505.80 : x
  2. Step 2: Convert to fraction form
    442,879.20/664,318.80 = 162,505.80/x
  3. Step 3: Cross multiply
    442,879.20x = 664,318.80 × 162,505.80
  4. Step 4: Simplify right side
    442,879.20x = 107,955,658,049.04
  5. Step 5: Solve for x
    x = 107,955,658,049.04/442,879.20
  6. Step 6: Final answer
    x = 243,758.70

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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.