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Finding the Fourth Proportional to 279,524.76, 385,724.66 and 158,668.52

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Solution

The fourth proportional to 279,524.76, 385,724.66 and 158,668.52 is: 218,951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,524.76 : 385,724.66 = 158,668.52 : x
  2. Step 2: Convert to fraction form
    279,524.76/385,724.66 = 158,668.52/x
  3. Step 3: Cross multiply
    279,524.76x = 385,724.66 × 158,668.52
  4. Step 4: Simplify right side
    279,524.76x = 61,202,360,929.70
  5. Step 5: Solve for x
    x = 61,202,360,929.70/279,524.76
  6. Step 6: Final answer
    x = 218,951.48

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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.