Home / 218,865.90-328,116.60-92,603.10

Finding the Fourth Proportional to 218,865.90, 328,116.60 and 92,603.10

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Solution

The fourth proportional to 218,865.90, 328,116.60 and 92,603.10 is: 138,827.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,865.90 : 328,116.60 = 92,603.10 : x
  2. Step 2: Convert to fraction form
    218,865.90/328,116.60 = 92,603.10/x
  3. Step 3: Cross multiply
    218,865.90x = 328,116.60 × 92,603.10
  4. Step 4: Simplify right side
    218,865.90x = 30,384,614,321.46
  5. Step 5: Solve for x
    x = 30,384,614,321.46/218,865.90
  6. Step 6: Final answer
    x = 138,827.54

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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.