Home / 213,318.47-320,025.42-80,199.88

Finding the Fourth Proportional to 213,318.47, 320,025.42 and 80,199.88

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Solution

The fourth proportional to 213,318.47, 320,025.42 and 80,199.88 is: 120,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,318.47 : 320,025.42 = 80,199.88 : x
  2. Step 2: Convert to fraction form
    213,318.47/320,025.42 = 80,199.88/x
  3. Step 3: Cross multiply
    213,318.47x = 320,025.42 × 80,199.88
  4. Step 4: Simplify right side
    213,318.47x = 25,666,000,280.95
  5. Step 5: Solve for x
    x = 25,666,000,280.95/213,318.47
  6. Step 6: Final answer
    x = 120,317.76

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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.