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Finding the Fourth Proportional to 274,517.68, 378,780.54 and 172,484.03

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Solution

The fourth proportional to 274,517.68, 378,780.54 and 172,484.03 is: 237,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,517.68 : 378,780.54 = 172,484.03 : x
  2. Step 2: Convert to fraction form
    274,517.68/378,780.54 = 172,484.03/x
  3. Step 3: Cross multiply
    274,517.68x = 378,780.54 × 172,484.03
  4. Step 4: Simplify right side
    274,517.68x = 65,333,594,024.78
  5. Step 5: Solve for x
    x = 65,333,594,024.78/274,517.68
  6. Step 6: Final answer
    x = 237,994.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.