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Finding the Fourth Proportional to 274,498.66, 378,673.14 and 172,647.64

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Solution

The fourth proportional to 274,498.66, 378,673.14 and 172,647.64 is: 238,168.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,498.66 : 378,673.14 = 172,647.64 : x
  2. Step 2: Convert to fraction form
    274,498.66/378,673.14 = 172,647.64/x
  3. Step 3: Cross multiply
    274,498.66x = 378,673.14 × 172,647.64
  4. Step 4: Simplify right side
    274,498.66x = 65,377,023,952.39
  5. Step 5: Solve for x
    x = 65,377,023,952.39/274,498.66
  6. Step 6: Final answer
    x = 238,168.83

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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.