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Finding the Fourth Proportional to 343,333.80, 515,583.90 and 254,687.40

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Solution

The fourth proportional to 343,333.80, 515,583.90 and 254,687.40 is: 382,463.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,333.80 : 515,583.90 = 254,687.40 : x
  2. Step 2: Convert to fraction form
    343,333.80/515,583.90 = 254,687.40/x
  3. Step 3: Cross multiply
    343,333.80x = 515,583.90 × 254,687.40
  4. Step 4: Simplify right side
    343,333.80x = 131,312,722,972.86
  5. Step 5: Solve for x
    x = 131,312,722,972.86/343,333.80
  6. Step 6: Final answer
    x = 382,463.72

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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.