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Finding the Fourth Proportional to 265,560.29, 398,458.17 and 139,170.48

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Solution

The fourth proportional to 265,560.29, 398,458.17 and 139,170.48 is: 208,817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,560.29 : 398,458.17 = 139,170.48 : x
  2. Step 2: Convert to fraction form
    265,560.29/398,458.17 = 139,170.48/x
  3. Step 3: Cross multiply
    265,560.29x = 398,458.17 × 139,170.48
  4. Step 4: Simplify right side
    265,560.29x = 55,453,614,082.97
  5. Step 5: Solve for x
    x = 55,453,614,082.97/265,560.29
  6. Step 6: Final answer
    x = 208,817.42

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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.