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Finding the Fourth Proportional to 303,517.35, 455,330.70 and 126,042.30

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Solution

The fourth proportional to 303,517.35, 455,330.70 and 126,042.30 is: 189,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,517.35 : 455,330.70 = 126,042.30 : x
  2. Step 2: Convert to fraction form
    303,517.35/455,330.70 = 126,042.30/x
  3. Step 3: Cross multiply
    303,517.35x = 455,330.70 × 126,042.30
  4. Step 4: Simplify right side
    303,517.35x = 57,390,928,688.61
  5. Step 5: Solve for x
    x = 57,390,928,688.61/303,517.35
  6. Step 6: Final answer
    x = 189,086.16

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1.5x scale

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.