Home / 206,438.30-309,658.41-56,680.70

Finding the Fourth Proportional to 206,438.30, 309,658.41 and 56,680.70

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Solution

The fourth proportional to 206,438.30, 309,658.41 and 56,680.70 is: 85,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,438.30 : 309,658.41 = 56,680.70 : x
  2. Step 2: Convert to fraction form
    206,438.30/309,658.41 = 56,680.70/x
  3. Step 3: Cross multiply
    206,438.30x = 309,658.41 × 56,680.70
  4. Step 4: Simplify right side
    206,438.30x = 17,551,655,439.69
  5. Step 5: Solve for x
    x = 17,551,655,439.69/206,438.30
  6. Step 6: Final answer
    x = 85,021.31

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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.