Home / 218,731.06-328,142.34-92,371.60

Finding the Fourth Proportional to 218,731.06, 328,142.34 and 92,371.60

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Solution

The fourth proportional to 218,731.06, 328,142.34 and 92,371.60 is: 138,576.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,731.06 : 328,142.34 = 92,371.60 : x
  2. Step 2: Convert to fraction form
    218,731.06/328,142.34 = 92,371.60/x
  3. Step 3: Cross multiply
    218,731.06x = 328,142.34 × 92,371.60
  4. Step 4: Simplify right side
    218,731.06x = 30,311,032,973.54
  5. Step 5: Solve for x
    x = 30,311,032,973.54/218,731.06
  6. Step 6: Final answer
    x = 138,576.72

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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.