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Finding the Fourth Proportional to 220,800.60, 331,200.90 and 185,371.20

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Solution

The fourth proportional to 220,800.60, 331,200.90 and 185,371.20 is: 278,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,800.60 : 331,200.90 = 185,371.20 : x
  2. Step 2: Convert to fraction form
    220,800.60/331,200.90 = 185,371.20/x
  3. Step 3: Cross multiply
    220,800.60x = 331,200.90 × 185,371.20
  4. Step 4: Simplify right side
    220,800.60x = 61,395,108,274.08
  5. Step 5: Solve for x
    x = 61,395,108,274.08/220,800.60
  6. Step 6: Final answer
    x = 278,056.80

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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.