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Finding the Fourth Proportional to 229,307.20, 343,960.80 and 220,121.80

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Solution

The fourth proportional to 229,307.20, 343,960.80 and 220,121.80 is: 330,182.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,307.20 : 343,960.80 = 220,121.80 : x
  2. Step 2: Convert to fraction form
    229,307.20/343,960.80 = 220,121.80/x
  3. Step 3: Cross multiply
    229,307.20x = 343,960.80 × 220,121.80
  4. Step 4: Simplify right side
    229,307.20x = 75,713,270,425.44
  5. Step 5: Solve for x
    x = 75,713,270,425.44/229,307.20
  6. Step 6: Final answer
    x = 330,182.70

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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.