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Finding the Fourth Proportional to 259,747.80, 389,621.70 and 82,254.52

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Solution

The fourth proportional to 259,747.80, 389,621.70 and 82,254.52 is: 123,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,747.80 : 389,621.70 = 82,254.52 : x
  2. Step 2: Convert to fraction form
    259,747.80/389,621.70 = 82,254.52/x
  3. Step 3: Cross multiply
    259,747.80x = 389,621.70 × 82,254.52
  4. Step 4: Simplify right side
    259,747.80x = 32,048,145,915.08
  5. Step 5: Solve for x
    x = 32,048,145,915.08/259,747.80
  6. Step 6: Final answer
    x = 123,381.78

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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.