Home / 215,981.33-324,034.17-66,243.59

Finding the Fourth Proportional to 215,981.33, 324,034.17 and 66,243.59

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Solution

The fourth proportional to 215,981.33, 324,034.17 and 66,243.59 is: 99,384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,981.33 : 324,034.17 = 66,243.59 : x
  2. Step 2: Convert to fraction form
    215,981.33/324,034.17 = 66,243.59/x
  3. Step 3: Cross multiply
    215,981.33x = 324,034.17 × 66,243.59
  4. Step 4: Simplify right side
    215,981.33x = 21,465,186,703.47
  5. Step 5: Solve for x
    x = 21,465,186,703.47/215,981.33
  6. Step 6: Final answer
    x = 99,384.45

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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.