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Finding the Fourth Proportional to 220,522.40, 330,880.80 and 102,132.80

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Solution

The fourth proportional to 220,522.40, 330,880.80 and 102,132.80 is: 153,244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,522.40 : 330,880.80 = 102,132.80 : x
  2. Step 2: Convert to fraction form
    220,522.40/330,880.80 = 102,132.80/x
  3. Step 3: Cross multiply
    220,522.40x = 330,880.80 × 102,132.80
  4. Step 4: Simplify right side
    220,522.40x = 33,793,782,570.24
  5. Step 5: Solve for x
    x = 33,793,782,570.24/220,522.40
  6. Step 6: Final answer
    x = 153,244.22

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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.