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Finding the Fourth Proportional to 265,687.20, 398,253.96 and 115,887.27

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Solution

The fourth proportional to 265,687.20, 398,253.96 and 115,887.27 is: 173,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,687.20 : 398,253.96 = 115,887.27 : x
  2. Step 2: Convert to fraction form
    265,687.20/398,253.96 = 115,887.27/x
  3. Step 3: Cross multiply
    265,687.20x = 398,253.96 × 115,887.27
  4. Step 4: Simplify right side
    265,687.20x = 46,152,564,191.09
  5. Step 5: Solve for x
    x = 46,152,564,191.09/265,687.20
  6. Step 6: Final answer
    x = 173,710.15

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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.