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Finding the Fourth Proportional to 321,772.40, 482,814.42 and 132,372.73

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Solution

The fourth proportional to 321,772.40, 482,814.42 and 132,372.73 is: 198,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,772.40 : 482,814.42 = 132,372.73 : x
  2. Step 2: Convert to fraction form
    321,772.40/482,814.42 = 132,372.73/x
  3. Step 3: Cross multiply
    321,772.40x = 482,814.42 × 132,372.73
  4. Step 4: Simplify right side
    321,772.40x = 63,911,463,710.48
  5. Step 5: Solve for x
    x = 63,911,463,710.48/321,772.40
  6. Step 6: Final answer
    x = 198,623.20

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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.