Home / 215,731.59-323,743.19-75,491.43

Finding the Fourth Proportional to 215,731.59, 323,743.19 and 75,491.43

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Solution

The fourth proportional to 215,731.59, 323,743.19 and 75,491.43 is: 113,288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,731.59 : 323,743.19 = 75,491.43 : x
  2. Step 2: Convert to fraction form
    215,731.59/323,743.19 = 75,491.43/x
  3. Step 3: Cross multiply
    215,731.59x = 323,743.19 × 75,491.43
  4. Step 4: Simplify right side
    215,731.59x = 24,439,835,988.40
  5. Step 5: Solve for x
    x = 24,439,835,988.40/215,731.59
  6. Step 6: Final answer
    x = 113,288.17

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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.