Home / 261,279.67-391,823.82-205,228.91

Finding the Fourth Proportional to 261,279.67, 391,823.82 and 205,228.91

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Solution

The fourth proportional to 261,279.67, 391,823.82 and 205,228.91 is: 307,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,279.67 : 391,823.82 = 205,228.91 : x
  2. Step 2: Convert to fraction form
    261,279.67/391,823.82 = 205,228.91/x
  3. Step 3: Cross multiply
    261,279.67x = 391,823.82 × 205,228.91
  4. Step 4: Simplify right side
    261,279.67x = 80,413,573,531.52
  5. Step 5: Solve for x
    x = 80,413,573,531.52/261,279.67
  6. Step 6: Final answer
    x = 307,768.20

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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.