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Finding the Fourth Proportional to 273,887.70, 410,863.55 and 86,918.10

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Solution

The fourth proportional to 273,887.70, 410,863.55 and 86,918.10 is: 130,387.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,887.70 : 410,863.55 = 86,918.10 : x
  2. Step 2: Convert to fraction form
    273,887.70/410,863.55 = 86,918.10/x
  3. Step 3: Cross multiply
    273,887.70x = 410,863.55 × 86,918.10
  4. Step 4: Simplify right side
    273,887.70x = 35,711,479,125.26
  5. Step 5: Solve for x
    x = 35,711,479,125.26/273,887.70
  6. Step 6: Final answer
    x = 130,387.31

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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.