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Finding the Fourth Proportional to 342,068.80, 512,228.40 and 252,839.20

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Solution

The fourth proportional to 342,068.80, 512,228.40 and 252,839.20 is: 378,612.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,068.80 : 512,228.40 = 252,839.20 : x
  2. Step 2: Convert to fraction form
    342,068.80/512,228.40 = 252,839.20/x
  3. Step 3: Cross multiply
    342,068.80x = 512,228.40 × 252,839.20
  4. Step 4: Simplify right side
    342,068.80x = 129,511,418,873.28
  5. Step 5: Solve for x
    x = 129,511,418,873.28/342,068.80
  6. Step 6: Final answer
    x = 378,612.19

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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.