Home / 206,465.46-309,489.08-139,912.35

Finding the Fourth Proportional to 206,465.46, 309,489.08 and 139,912.35

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Solution

The fourth proportional to 206,465.46, 309,489.08 and 139,912.35 is: 209,726.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,465.46 : 309,489.08 = 139,912.35 : x
  2. Step 2: Convert to fraction form
    206,465.46/309,489.08 = 139,912.35/x
  3. Step 3: Cross multiply
    206,465.46x = 309,489.08 × 139,912.35
  4. Step 4: Simplify right side
    206,465.46x = 43,301,343,782.58
  5. Step 5: Solve for x
    x = 43,301,343,782.58/206,465.46
  6. Step 6: Final answer
    x = 209,726.82

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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.