Home / 207,766.80-311,650.20-172,337.40

Finding the Fourth Proportional to 207,766.80, 311,650.20 and 172,337.40

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Solution

The fourth proportional to 207,766.80, 311,650.20 and 172,337.40 is: 258,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,766.80 : 311,650.20 = 172,337.40 : x
  2. Step 2: Convert to fraction form
    207,766.80/311,650.20 = 172,337.40/x
  3. Step 3: Cross multiply
    207,766.80x = 311,650.20 × 172,337.40
  4. Step 4: Simplify right side
    207,766.80x = 53,708,985,177.48
  5. Step 5: Solve for x
    x = 53,708,985,177.48/207,766.80
  6. Step 6: Final answer
    x = 258,506.10

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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.