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Finding the Fourth Proportional to 218,969.56, 328,454.64 and 52,757.56

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Solution

The fourth proportional to 218,969.56, 328,454.64 and 52,757.56 is: 79,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,969.56 : 328,454.64 = 52,757.56 : x
  2. Step 2: Convert to fraction form
    218,969.56/328,454.64 = 52,757.56/x
  3. Step 3: Cross multiply
    218,969.56x = 328,454.64 × 52,757.56
  4. Step 4: Simplify right side
    218,969.56x = 17,328,465,377.08
  5. Step 5: Solve for x
    x = 17,328,465,377.08/218,969.56
  6. Step 6: Final answer
    x = 79,136.41

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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.