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Finding the Fourth Proportional to 658,256.50, 987,387.99 and 159,620.50

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Solution

The fourth proportional to 658,256.50, 987,387.99 and 159,620.50 is: 239,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,256.50 : 987,387.99 = 159,620.50 : x
  2. Step 2: Convert to fraction form
    658,256.50/987,387.99 = 159,620.50/x
  3. Step 3: Cross multiply
    658,256.50x = 987,387.99 × 159,620.50
  4. Step 4: Simplify right side
    658,256.50x = 157,607,364,657.80
  5. Step 5: Solve for x
    x = 157,607,364,657.80/658,256.50
  6. Step 6: Final answer
    x = 239,431.54

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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.