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Finding the Fourth Proportional to 220,557.60, 330,836.40 and 136,384.80

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Solution

The fourth proportional to 220,557.60, 330,836.40 and 136,384.80 is: 204,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,557.60 : 330,836.40 = 136,384.80 : x
  2. Step 2: Convert to fraction form
    220,557.60/330,836.40 = 136,384.80/x
  3. Step 3: Cross multiply
    220,557.60x = 330,836.40 × 136,384.80
  4. Step 4: Simplify right side
    220,557.60x = 45,121,056,246.72
  5. Step 5: Solve for x
    x = 45,121,056,246.72/220,557.60
  6. Step 6: Final answer
    x = 204,577.20

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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.