Home / 209,326.20-313,989.30-207,357.90

Finding the Fourth Proportional to 209,326.20, 313,989.30 and 207,357.90

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Solution

The fourth proportional to 209,326.20, 313,989.30 and 207,357.90 is: 311,036.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,326.20 : 313,989.30 = 207,357.90 : x
  2. Step 2: Convert to fraction form
    209,326.20/313,989.30 = 207,357.90/x
  3. Step 3: Cross multiply
    209,326.20x = 313,989.30 × 207,357.90
  4. Step 4: Simplify right side
    209,326.20x = 65,108,161,870.47
  5. Step 5: Solve for x
    x = 65,108,161,870.47/209,326.20
  6. Step 6: Final answer
    x = 311,036.85

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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.