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Finding the Fourth Proportional to 220,517.20, 330,948.60 and 102,203.20

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Solution

The fourth proportional to 220,517.20, 330,948.60 and 102,203.20 is: 153,384.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,517.20 : 330,948.60 = 102,203.20 : x
  2. Step 2: Convert to fraction form
    220,517.20/330,948.60 = 102,203.20/x
  3. Step 3: Cross multiply
    220,517.20x = 330,948.60 × 102,203.20
  4. Step 4: Simplify right side
    220,517.20x = 33,824,005,955.52
  5. Step 5: Solve for x
    x = 33,824,005,955.52/220,517.20
  6. Step 6: Final answer
    x = 153,384.89

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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.