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Finding the Fourth Proportional to 259,915.52, 389,559.12 and 126,596

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Solution

The fourth proportional to 259,915.52, 389,559.12 and 126,596 is: 189,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,915.52 : 389,559.12 = 126,596 : x
  2. Step 2: Convert to fraction form
    259,915.52/389,559.12 = 126,596/x
  3. Step 3: Cross multiply
    259,915.52x = 389,559.12 × 126,596
  4. Step 4: Simplify right side
    259,915.52x = 49,316,626,355.52
  5. Step 5: Solve for x
    x = 49,316,626,355.52/259,915.52
  6. Step 6: Final answer
    x = 189,740.98

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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.