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Finding the Fourth Proportional to 265,998.40, 399,034.05 and 88,486.90

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Solution

The fourth proportional to 265,998.40, 399,034.05 and 88,486.90 is: 132,742.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,998.40 : 399,034.05 = 88,486.90 : x
  2. Step 2: Convert to fraction form
    265,998.40/399,034.05 = 88,486.90/x
  3. Step 3: Cross multiply
    265,998.40x = 399,034.05 × 88,486.90
  4. Step 4: Simplify right side
    265,998.40x = 35,309,286,078.95
  5. Step 5: Solve for x
    x = 35,309,286,078.95/265,998.40
  6. Step 6: Final answer
    x = 132,742.48

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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.