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Finding the Fourth Proportional to 658,248, 987,375.24 and 159,612

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Solution

The fourth proportional to 658,248, 987,375.24 and 159,612 is: 239,418.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,248 : 987,375.24 = 159,612 : x
  2. Step 2: Convert to fraction form
    658,248/987,375.24 = 159,612/x
  3. Step 3: Cross multiply
    658,248x = 987,375.24 × 159,612
  4. Step 4: Simplify right side
    658,248x = 157,596,936,806.88
  5. Step 5: Solve for x
    x = 157,596,936,806.88/658,248
  6. Step 6: Final answer
    x = 239,418.79

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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.