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Finding the Fourth Proportional to 279,674.77, 385,922.41 and 157,147.69

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Solution

The fourth proportional to 279,674.77, 385,922.41 and 157,147.69 is: 216,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,674.77 : 385,922.41 = 157,147.69 : x
  2. Step 2: Convert to fraction form
    279,674.77/385,922.41 = 157,147.69/x
  3. Step 3: Cross multiply
    279,674.77x = 385,922.41 × 157,147.69
  4. Step 4: Simplify right side
    279,674.77x = 60,646,815,250.73
  5. Step 5: Solve for x
    x = 60,646,815,250.73/279,674.77
  6. Step 6: Final answer
    x = 216,847.65

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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.