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Finding the Fourth Proportional to 220,557.60, 330,180.30 and 131,765.40

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Solution

The fourth proportional to 220,557.60, 330,180.30 and 131,765.40 is: 197,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,557.60 : 330,180.30 = 131,765.40 : x
  2. Step 2: Convert to fraction form
    220,557.60/330,180.30 = 131,765.40/x
  3. Step 3: Cross multiply
    220,557.60x = 330,180.30 × 131,765.40
  4. Step 4: Simplify right side
    220,557.60x = 43,506,339,301.62
  5. Step 5: Solve for x
    x = 43,506,339,301.62/220,557.60
  6. Step 6: Final answer
    x = 197,256.13

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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.