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Finding the Fourth Proportional to 274,273.29, 378,730.76 and 172,469.12

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Solution

The fourth proportional to 274,273.29, 378,730.76 and 172,469.12 is: 238,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,273.29 : 378,730.76 = 172,469.12 : x
  2. Step 2: Convert to fraction form
    274,273.29/378,730.76 = 172,469.12/x
  3. Step 3: Cross multiply
    274,273.29x = 378,730.76 × 172,469.12
  4. Step 4: Simplify right side
    274,273.29x = 65,319,358,138.13
  5. Step 5: Solve for x
    x = 65,319,358,138.13/274,273.29
  6. Step 6: Final answer
    x = 238,154.28

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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.