Home / 218,989.90-328,302.60-92,727.10

Finding the Fourth Proportional to 218,989.90, 328,302.60 and 92,727.10

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Solution

The fourth proportional to 218,989.90, 328,302.60 and 92,727.10 is: 139,013.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,989.90 : 328,302.60 = 92,727.10 : x
  2. Step 2: Convert to fraction form
    218,989.90/328,302.60 = 92,727.10/x
  3. Step 3: Cross multiply
    218,989.90x = 328,302.60 × 92,727.10
  4. Step 4: Simplify right side
    218,989.90x = 30,442,548,020.46
  5. Step 5: Solve for x
    x = 30,442,548,020.46/218,989.90
  6. Step 6: Final answer
    x = 139,013.48

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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.