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Finding the Fourth Proportional to 303,425.90, 455,248.20 and 126,060.20

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Solution

The fourth proportional to 303,425.90, 455,248.20 and 126,060.20 is: 189,135.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,425.90 : 455,248.20 = 126,060.20 : x
  2. Step 2: Convert to fraction form
    303,425.90/455,248.20 = 126,060.20/x
  3. Step 3: Cross multiply
    303,425.90x = 455,248.20 × 126,060.20
  4. Step 4: Simplify right side
    303,425.90x = 57,388,679,141.64
  5. Step 5: Solve for x
    x = 57,388,679,141.64/303,425.90
  6. Step 6: Final answer
    x = 189,135.73

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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.