Home / 261,266.82-391,806.18-90,442.11

Finding the Fourth Proportional to 261,266.82, 391,806.18 and 90,442.11

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Solution

The fourth proportional to 261,266.82, 391,806.18 and 90,442.11 is: 135,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,266.82 : 391,806.18 = 90,442.11 : x
  2. Step 2: Convert to fraction form
    261,266.82/391,806.18 = 90,442.11/x
  3. Step 3: Cross multiply
    261,266.82x = 391,806.18 × 90,442.11
  4. Step 4: Simplify right side
    261,266.82x = 35,435,777,630.24
  5. Step 5: Solve for x
    x = 35,435,777,630.24/261,266.82
  6. Step 6: Final answer
    x = 135,630.61

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1.5x scale

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.