Home / 206,711.85-309,526.47-135,410.25

Finding the Fourth Proportional to 206,711.85, 309,526.47 and 135,410.25

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Solution

The fourth proportional to 206,711.85, 309,526.47 and 135,410.25 is: 202,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,711.85 : 309,526.47 = 135,410.25 : x
  2. Step 2: Convert to fraction form
    206,711.85/309,526.47 = 135,410.25/x
  3. Step 3: Cross multiply
    206,711.85x = 309,526.47 × 135,410.25
  4. Step 4: Simplify right side
    206,711.85x = 41,913,056,684.32
  5. Step 5: Solve for x
    x = 41,913,056,684.32/206,711.85
  6. Step 6: Final answer
    x = 202,760.78

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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.