Home / 318,871.27-440,025.73-198,009.95

Finding the Fourth Proportional to 318,871.27, 440,025.73 and 198,009.95

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Solution

The fourth proportional to 318,871.27, 440,025.73 and 198,009.95 is: 273,243.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,871.27 : 440,025.73 = 198,009.95 : x
  2. Step 2: Convert to fraction form
    318,871.27/440,025.73 = 198,009.95/x
  3. Step 3: Cross multiply
    318,871.27x = 440,025.73 × 198,009.95
  4. Step 4: Simplify right side
    318,871.27x = 87,129,473,401.05
  5. Step 5: Solve for x
    x = 87,129,473,401.05/318,871.27
  6. Step 6: Final answer
    x = 273,243.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.