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Finding the Fourth Proportional to 218,036.52, 326,991.60 and 84,887.10

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Solution

The fourth proportional to 218,036.52, 326,991.60 and 84,887.10 is: 127,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,036.52 : 326,991.60 = 84,887.10 : x
  2. Step 2: Convert to fraction form
    218,036.52/326,991.60 = 84,887.10/x
  3. Step 3: Cross multiply
    218,036.52x = 326,991.60 × 84,887.10
  4. Step 4: Simplify right side
    218,036.52x = 27,757,368,648.36
  5. Step 5: Solve for x
    x = 27,757,368,648.36/218,036.52
  6. Step 6: Final answer
    x = 127,306.05

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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.