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Finding the Fourth Proportional to 220,124.40, 330,167.40 and 72,380.40

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Solution

The fourth proportional to 220,124.40, 330,167.40 and 72,380.40 is: 108,564.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,124.40 : 330,167.40 = 72,380.40 : x
  2. Step 2: Convert to fraction form
    220,124.40/330,167.40 = 72,380.40/x
  3. Step 3: Cross multiply
    220,124.40x = 330,167.40 × 72,380.40
  4. Step 4: Simplify right side
    220,124.40x = 23,897,648,478.96
  5. Step 5: Solve for x
    x = 23,897,648,478.96/220,124.40
  6. Step 6: Final answer
    x = 108,564.29

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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.