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Finding the Fourth Proportional to 273,937.60, 378,029.28 and 153,081.28

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Solution

The fourth proportional to 273,937.60, 378,029.28 and 153,081.28 is: 211,249.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,937.60 : 378,029.28 = 153,081.28 : x
  2. Step 2: Convert to fraction form
    273,937.60/378,029.28 = 153,081.28/x
  3. Step 3: Cross multiply
    273,937.60x = 378,029.28 × 153,081.28
  4. Step 4: Simplify right side
    273,937.60x = 57,869,206,059.88
  5. Step 5: Solve for x
    x = 57,869,206,059.88/273,937.60
  6. Step 6: Final answer
    x = 211,249.59

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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.