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Finding the Fourth Proportional to 330,373.40, 495,560.43 and 90,469.76

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Solution

The fourth proportional to 330,373.40, 495,560.43 and 90,469.76 is: 135,704.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,373.40 : 495,560.43 = 90,469.76 : x
  2. Step 2: Convert to fraction form
    330,373.40/495,560.43 = 90,469.76/x
  3. Step 3: Cross multiply
    330,373.40x = 495,560.43 × 90,469.76
  4. Step 4: Simplify right side
    330,373.40x = 44,833,230,689.79
  5. Step 5: Solve for x
    x = 44,833,230,689.79/330,373.40
  6. Step 6: Final answer
    x = 135,704.72

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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.