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Finding the Fourth Proportional to 220,658.60, 330,991.14 and 54,446.60

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Solution

The fourth proportional to 220,658.60, 330,991.14 and 54,446.60 is: 81,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,658.60 : 330,991.14 = 54,446.60 : x
  2. Step 2: Convert to fraction form
    220,658.60/330,991.14 = 54,446.60/x
  3. Step 3: Cross multiply
    220,658.60x = 330,991.14 × 54,446.60
  4. Step 4: Simplify right side
    220,658.60x = 18,021,342,203.12
  5. Step 5: Solve for x
    x = 18,021,342,203.12/220,658.60
  6. Step 6: Final answer
    x = 81,670.70

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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.