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Finding the Fourth Proportional to 273,138.28, 376,929.48 and 158,440.12

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Solution

The fourth proportional to 273,138.28, 376,929.48 and 158,440.12 is: 218,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,138.28 : 376,929.48 = 158,440.12 : x
  2. Step 2: Convert to fraction form
    273,138.28/376,929.48 = 158,440.12/x
  3. Step 3: Cross multiply
    273,138.28x = 376,929.48 × 158,440.12
  4. Step 4: Simplify right side
    273,138.28x = 59,720,752,042.74
  5. Step 5: Solve for x
    x = 59,720,752,042.74/273,138.28
  6. Step 6: Final answer
    x = 218,646.58

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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.