Home / 206,505.05-309,760.96-56,744.40

Finding the Fourth Proportional to 206,505.05, 309,760.96 and 56,744.40

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Solution

The fourth proportional to 206,505.05, 309,760.96 and 56,744.40 is: 85,117.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,505.05 : 309,760.96 = 56,744.40 : x
  2. Step 2: Convert to fraction form
    206,505.05/309,760.96 = 56,744.40/x
  3. Step 3: Cross multiply
    206,505.05x = 309,760.96 × 56,744.40
  4. Step 4: Simplify right side
    206,505.05x = 17,577,199,202.36
  5. Step 5: Solve for x
    x = 17,577,199,202.36/206,505.05
  6. Step 6: Final answer
    x = 85,117.53

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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.