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Finding the Fourth Proportional to 218,761.26, 328,143.24 and 60,991.08

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Solution

The fourth proportional to 218,761.26, 328,143.24 and 60,991.08 is: 91,487.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,761.26 : 328,143.24 = 60,991.08 : x
  2. Step 2: Convert to fraction form
    218,761.26/328,143.24 = 60,991.08/x
  3. Step 3: Cross multiply
    218,761.26x = 328,143.24 × 60,991.08
  4. Step 4: Simplify right side
    218,761.26x = 20,013,810,602.30
  5. Step 5: Solve for x
    x = 20,013,810,602.30/218,761.26
  6. Step 6: Final answer
    x = 91,487.00

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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.