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Finding the Fourth Proportional to 343,990.80, 515,986.20 and 237,702.60

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Solution

The fourth proportional to 343,990.80, 515,986.20 and 237,702.60 is: 356,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,990.80 : 515,986.20 = 237,702.60 : x
  2. Step 2: Convert to fraction form
    343,990.80/515,986.20 = 237,702.60/x
  3. Step 3: Cross multiply
    343,990.80x = 515,986.20 × 237,702.60
  4. Step 4: Simplify right side
    343,990.80x = 122,651,261,304.12
  5. Step 5: Solve for x
    x = 122,651,261,304.12/343,990.80
  6. Step 6: Final answer
    x = 356,553.90

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Similar ratio
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1.5x scale

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.