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Finding the Fourth Proportional to 304,000.28, 455,754.44 and 126,640.52

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Solution

The fourth proportional to 304,000.28, 455,754.44 and 126,640.52 is: 189,858.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,000.28 : 455,754.44 = 126,640.52 : x
  2. Step 2: Convert to fraction form
    304,000.28/455,754.44 = 126,640.52/x
  3. Step 3: Cross multiply
    304,000.28x = 455,754.44 × 126,640.52
  4. Step 4: Simplify right side
    304,000.28x = 57,716,979,273.91
  5. Step 5: Solve for x
    x = 57,716,979,273.91/304,000.28
  6. Step 6: Final answer
    x = 189,858.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.