Home / 279,932.42-386,295.24-157,421.30

Finding the Fourth Proportional to 279,932.42, 386,295.24 and 157,421.30

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Solution

The fourth proportional to 279,932.42, 386,295.24 and 157,421.30 is: 217,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,932.42 : 386,295.24 = 157,421.30 : x
  2. Step 2: Convert to fraction form
    279,932.42/386,295.24 = 157,421.30/x
  3. Step 3: Cross multiply
    279,932.42x = 386,295.24 × 157,421.30
  4. Step 4: Simplify right side
    279,932.42x = 60,811,096,933.14
  5. Step 5: Solve for x
    x = 60,811,096,933.14/279,932.42
  6. Step 6: Final answer
    x = 217,234.92

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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.