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Finding the Fourth Proportional to 265,097.22, 397,719.95 and 87,729.09

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Solution

The fourth proportional to 265,097.22, 397,719.95 and 87,729.09 is: 131,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,097.22 : 397,719.95 = 87,729.09 : x
  2. Step 2: Convert to fraction form
    265,097.22/397,719.95 = 87,729.09/x
  3. Step 3: Cross multiply
    265,097.22x = 397,719.95 × 87,729.09
  4. Step 4: Simplify right side
    265,097.22x = 34,891,608,849.70
  5. Step 5: Solve for x
    x = 34,891,608,849.70/265,097.22
  6. Step 6: Final answer
    x = 131,618.16

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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.