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Finding the Fourth Proportional to 453,134.70, 625,170.15 and 280,990.80

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Solution

The fourth proportional to 453,134.70, 625,170.15 and 280,990.80 is: 387,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,134.70 : 625,170.15 = 280,990.80 : x
  2. Step 2: Convert to fraction form
    453,134.70/625,170.15 = 280,990.80/x
  3. Step 3: Cross multiply
    453,134.70x = 625,170.15 × 280,990.80
  4. Step 4: Simplify right side
    453,134.70x = 175,667,060,584.62
  5. Step 5: Solve for x
    x = 175,667,060,584.62/453,134.70
  6. Step 6: Final answer
    x = 387,670.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.