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Finding the Fourth Proportional to 372,448.60, 558,672.90 and 345,876.55

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Solution

The fourth proportional to 372,448.60, 558,672.90 and 345,876.55 is: 518,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,448.60 : 558,672.90 = 345,876.55 : x
  2. Step 2: Convert to fraction form
    372,448.60/558,672.90 = 345,876.55/x
  3. Step 3: Cross multiply
    372,448.60x = 558,672.90 × 345,876.55
  4. Step 4: Simplify right side
    372,448.60x = 193,231,855,230.50
  5. Step 5: Solve for x
    x = 193,231,855,230.50/372,448.60
  6. Step 6: Final answer
    x = 518,814.83

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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.