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Finding the Fourth Proportional to 279,385.49, 385,540.53 and 158,524.18

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Solution

The fourth proportional to 279,385.49, 385,540.53 and 158,524.18 is: 218,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,385.49 : 385,540.53 = 158,524.18 : x
  2. Step 2: Convert to fraction form
    279,385.49/385,540.53 = 158,524.18/x
  3. Step 3: Cross multiply
    279,385.49x = 385,540.53 × 158,524.18
  4. Step 4: Simplify right side
    279,385.49x = 61,117,496,375.02
  5. Step 5: Solve for x
    x = 61,117,496,375.02/279,385.49
  6. Step 6: Final answer
    x = 218,756.87

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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.