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Finding the Fourth Proportional to 303,874.13, 455,672.69 and 126,275.15

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Solution

The fourth proportional to 303,874.13, 455,672.69 and 126,275.15 is: 189,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,874.13 : 455,672.69 = 126,275.15 : x
  2. Step 2: Convert to fraction form
    303,874.13/455,672.69 = 126,275.15/x
  3. Step 3: Cross multiply
    303,874.13x = 455,672.69 × 126,275.15
  4. Step 4: Simplify right side
    303,874.13x = 57,540,138,261.99
  5. Step 5: Solve for x
    x = 57,540,138,261.99/303,874.13
  6. Step 6: Final answer
    x = 189,355.17

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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.