Home / 325,428.20-488,579.70-207,621.80

Finding the Fourth Proportional to 325,428.20, 488,579.70 and 207,621.80

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Solution

The fourth proportional to 325,428.20, 488,579.70 and 207,621.80 is: 311,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,428.20 : 488,579.70 = 207,621.80 : x
  2. Step 2: Convert to fraction form
    325,428.20/488,579.70 = 207,621.80/x
  3. Step 3: Cross multiply
    325,428.20x = 488,579.70 × 207,621.80
  4. Step 4: Simplify right side
    325,428.20x = 101,439,796,757.46
  5. Step 5: Solve for x
    x = 101,439,796,757.46/325,428.20
  6. Step 6: Final answer
    x = 311,711.76

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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.