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Finding the Fourth Proportional to 274,572.44, 378,917.18 and 153,713.20

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Solution

The fourth proportional to 274,572.44, 378,917.18 and 153,713.20 is: 212,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,572.44 : 378,917.18 = 153,713.20 : x
  2. Step 2: Convert to fraction form
    274,572.44/378,917.18 = 153,713.20/x
  3. Step 3: Cross multiply
    274,572.44x = 378,917.18 × 153,713.20
  4. Step 4: Simplify right side
    274,572.44x = 58,244,572,272.78
  5. Step 5: Solve for x
    x = 58,244,572,272.78/274,572.44
  6. Step 6: Final answer
    x = 212,128.25

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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.