Home / 321,406.18-482,090.13-143,865.52

Finding the Fourth Proportional to 321,406.18, 482,090.13 and 143,865.52

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Solution

The fourth proportional to 321,406.18, 482,090.13 and 143,865.52 is: 215,789.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,406.18 : 482,090.13 = 143,865.52 : x
  2. Step 2: Convert to fraction form
    321,406.18/482,090.13 = 143,865.52/x
  3. Step 3: Cross multiply
    321,406.18x = 482,090.13 × 143,865.52
  4. Step 4: Simplify right side
    321,406.18x = 69,356,146,034.09
  5. Step 5: Solve for x
    x = 69,356,146,034.09/321,406.18
  6. Step 6: Final answer
    x = 215,789.71

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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.