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Finding the Fourth Proportional to 342,972.80, 515,042.40 and 254,326.40

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Solution

The fourth proportional to 342,972.80, 515,042.40 and 254,326.40 is: 381,922.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,972.80 : 515,042.40 = 254,326.40 : x
  2. Step 2: Convert to fraction form
    342,972.80/515,042.40 = 254,326.40/x
  3. Step 3: Cross multiply
    342,972.80x = 515,042.40 × 254,326.40
  4. Step 4: Simplify right side
    342,972.80x = 130,988,879,439.36
  5. Step 5: Solve for x
    x = 130,988,879,439.36/342,972.80
  6. Step 6: Final answer
    x = 381,922.06

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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.