Home / 218,917.36-328,237.72-92,491.92

Finding the Fourth Proportional to 218,917.36, 328,237.72 and 92,491.92

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Solution

The fourth proportional to 218,917.36, 328,237.72 and 92,491.92 is: 138,679.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,917.36 : 328,237.72 = 92,491.92 : x
  2. Step 2: Convert to fraction form
    218,917.36/328,237.72 = 92,491.92/x
  3. Step 3: Cross multiply
    218,917.36x = 328,237.72 × 92,491.92
  4. Step 4: Simplify right side
    218,917.36x = 30,359,336,939.22
  5. Step 5: Solve for x
    x = 30,359,336,939.22/218,917.36
  6. Step 6: Final answer
    x = 138,679.44

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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.