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Finding the Fourth Proportional to 231,436.80, 347,068.80 and 161,107.20

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Solution

The fourth proportional to 231,436.80, 347,068.80 and 161,107.20 is: 241,600.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,436.80 : 347,068.80 = 161,107.20 : x
  2. Step 2: Convert to fraction form
    231,436.80/347,068.80 = 161,107.20/x
  3. Step 3: Cross multiply
    231,436.80x = 347,068.80 × 161,107.20
  4. Step 4: Simplify right side
    231,436.80x = 55,915,282,575.36
  5. Step 5: Solve for x
    x = 55,915,282,575.36/231,436.80
  6. Step 6: Final answer
    x = 241,600.66

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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.