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Finding the Fourth Proportional to 494,353.89, 681,717.15 and 372,138.93

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Solution

The fourth proportional to 494,353.89, 681,717.15 and 372,138.93 is: 513,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,353.89 : 681,717.15 = 372,138.93 : x
  2. Step 2: Convert to fraction form
    494,353.89/681,717.15 = 372,138.93/x
  3. Step 3: Cross multiply
    494,353.89x = 681,717.15 × 372,138.93
  4. Step 4: Simplify right side
    494,353.89x = 253,693,490,763.65
  5. Step 5: Solve for x
    x = 253,693,490,763.65/494,353.89
  6. Step 6: Final answer
    x = 513,181.94

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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.