Home / 206,462.38-309,484.41-139,909.24

Finding the Fourth Proportional to 206,462.38, 309,484.41 and 139,909.24

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Solution

The fourth proportional to 206,462.38, 309,484.41 and 139,909.24 is: 209,722.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,462.38 : 309,484.41 = 139,909.24 : x
  2. Step 2: Convert to fraction form
    206,462.38/309,484.41 = 139,909.24/x
  3. Step 3: Cross multiply
    206,462.38x = 309,484.41 × 139,909.24
  4. Step 4: Simplify right side
    206,462.38x = 43,299,728,594.95
  5. Step 5: Solve for x
    x = 43,299,728,594.95/206,462.38
  6. Step 6: Final answer
    x = 209,722.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.