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Finding the Fourth Proportional to 303,601.52, 455,322.80 and 90,311.97

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Solution

The fourth proportional to 303,601.52, 455,322.80 and 90,311.97 is: 135,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,601.52 : 455,322.80 = 90,311.97 : x
  2. Step 2: Convert to fraction form
    303,601.52/455,322.80 = 90,311.97/x
  3. Step 3: Cross multiply
    303,601.52x = 455,322.80 × 90,311.97
  4. Step 4: Simplify right side
    303,601.52x = 41,121,098,425.97
  5. Step 5: Solve for x
    x = 41,121,098,425.97/303,601.52
  6. Step 6: Final answer
    x = 135,444.31

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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.