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Finding the Fourth Proportional to 220,614.60, 330,921.90 and 54,402.60

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Solution

The fourth proportional to 220,614.60, 330,921.90 and 54,402.60 is: 81,603.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,614.60 : 330,921.90 = 54,402.60 : x
  2. Step 2: Convert to fraction form
    220,614.60/330,921.90 = 54,402.60/x
  3. Step 3: Cross multiply
    220,614.60x = 330,921.90 × 54,402.60
  4. Step 4: Simplify right side
    220,614.60x = 18,003,011,756.94
  5. Step 5: Solve for x
    x = 18,003,011,756.94/220,614.60
  6. Step 6: Final answer
    x = 81,603.90

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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.