Home / 261,844.20-391,859.10-156,738.60

Finding the Fourth Proportional to 261,844.20, 391,859.10 and 156,738.60

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Solution

The fourth proportional to 261,844.20, 391,859.10 and 156,738.60 is: 234,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,844.20 : 391,859.10 = 156,738.60 : x
  2. Step 2: Convert to fraction form
    261,844.20/391,859.10 = 156,738.60/x
  3. Step 3: Cross multiply
    261,844.20x = 391,859.10 × 156,738.60
  4. Step 4: Simplify right side
    261,844.20x = 61,419,446,731.26
  5. Step 5: Solve for x
    x = 61,419,446,731.26/261,844.20
  6. Step 6: Final answer
    x = 234,564.85

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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.