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Finding the Fourth Proportional to 218,692.28, 328,138.37 and 98,781.29

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Solution

The fourth proportional to 218,692.28, 328,138.37 and 98,781.29 is: 148,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,692.28 : 328,138.37 = 98,781.29 : x
  2. Step 2: Convert to fraction form
    218,692.28/328,138.37 = 98,781.29/x
  3. Step 3: Cross multiply
    218,692.28x = 328,138.37 × 98,781.29
  4. Step 4: Simplify right side
    218,692.28x = 32,413,929,352.50
  5. Step 5: Solve for x
    x = 32,413,929,352.50/218,692.28
  6. Step 6: Final answer
    x = 148,217.08

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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.