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Finding the Fourth Proportional to 664,706.80, 996,865.80 and 238,193.20

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Solution

The fourth proportional to 664,706.80, 996,865.80 and 238,193.20 is: 357,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,706.80 : 996,865.80 = 238,193.20 : x
  2. Step 2: Convert to fraction form
    664,706.80/996,865.80 = 238,193.20/x
  3. Step 3: Cross multiply
    664,706.80x = 996,865.80 × 238,193.20
  4. Step 4: Simplify right side
    664,706.80x = 237,446,654,872.56
  5. Step 5: Solve for x
    x = 237,446,654,872.56/664,706.80
  6. Step 6: Final answer
    x = 357,220.14

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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.