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Finding the Fourth Proportional to 218,754.60, 328,139.22 and 60,969.84

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Solution

The fourth proportional to 218,754.60, 328,139.22 and 60,969.84 is: 91,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,754.60 : 328,139.22 = 60,969.84 : x
  2. Step 2: Convert to fraction form
    218,754.60/328,139.22 = 60,969.84/x
  3. Step 3: Cross multiply
    218,754.60x = 328,139.22 × 60,969.84
  4. Step 4: Simplify right side
    218,754.60x = 20,006,595,741.12
  5. Step 5: Solve for x
    x = 20,006,595,741.12/218,754.60
  6. Step 6: Final answer
    x = 91,456.80

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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.