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Finding the Fourth Proportional to 220,581.20, 330,871.80 and 149,722.40

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Solution

The fourth proportional to 220,581.20, 330,871.80 and 149,722.40 is: 224,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,581.20 : 330,871.80 = 149,722.40 : x
  2. Step 2: Convert to fraction form
    220,581.20/330,871.80 = 149,722.40/x
  3. Step 3: Cross multiply
    220,581.20x = 330,871.80 × 149,722.40
  4. Step 4: Simplify right side
    220,581.20x = 49,538,919,988.32
  5. Step 5: Solve for x
    x = 49,538,919,988.32/220,581.20
  6. Step 6: Final answer
    x = 224,583.60

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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.