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Finding the Fourth Proportional to 664,320.80, 996,286.80 and 237,807.20

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Solution

The fourth proportional to 664,320.80, 996,286.80 and 237,807.20 is: 356,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,320.80 : 996,286.80 = 237,807.20 : x
  2. Step 2: Convert to fraction form
    664,320.80/996,286.80 = 237,807.20/x
  3. Step 3: Cross multiply
    664,320.80x = 996,286.80 × 237,807.20
  4. Step 4: Simplify right side
    664,320.80x = 236,924,174,304.96
  5. Step 5: Solve for x
    x = 236,924,174,304.96/664,320.80
  6. Step 6: Final answer
    x = 356,641.21

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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.