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Finding the Fourth Proportional to 303,960.78, 455,695.20 and 126,601.02

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Solution

The fourth proportional to 303,960.78, 455,695.20 and 126,601.02 is: 189,799.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,960.78 : 455,695.20 = 126,601.02 : x
  2. Step 2: Convert to fraction form
    303,960.78/455,695.20 = 126,601.02/x
  3. Step 3: Cross multiply
    303,960.78x = 455,695.20 × 126,601.02
  4. Step 4: Simplify right side
    303,960.78x = 57,691,477,129.10
  5. Step 5: Solve for x
    x = 57,691,477,129.10/303,960.78
  6. Step 6: Final answer
    x = 189,799.08

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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.