Home / 494,021.11-681,740.17-279,156.55

Finding the Fourth Proportional to 494,021.11, 681,740.17 and 279,156.55

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Solution

The fourth proportional to 494,021.11, 681,740.17 and 279,156.55 is: 385,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,021.11 : 681,740.17 = 279,156.55 : x
  2. Step 2: Convert to fraction form
    494,021.11/681,740.17 = 279,156.55/x
  3. Step 3: Cross multiply
    494,021.11x = 681,740.17 × 279,156.55
  4. Step 4: Simplify right side
    494,021.11x = 190,312,233,853.61
  5. Step 5: Solve for x
    x = 190,312,233,853.61/494,021.11
  6. Step 6: Final answer
    x = 385,230.97

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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.