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Finding the Fourth Proportional to 279,529.57, 385,738.77 and 158,668.66

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Solution

The fourth proportional to 279,529.57, 385,738.77 and 158,668.66 is: 218,955.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,529.57 : 385,738.77 = 158,668.66 : x
  2. Step 2: Convert to fraction form
    279,529.57/385,738.77 = 158,668.66/x
  3. Step 3: Cross multiply
    279,529.57x = 385,738.77 × 158,668.66
  4. Step 4: Simplify right side
    279,529.57x = 61,204,653,745.95
  5. Step 5: Solve for x
    x = 61,204,653,745.95/279,529.57
  6. Step 6: Final answer
    x = 218,955.92

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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.