Home / 318,821.68-440,185.68-198,143.04

Finding the Fourth Proportional to 318,821.68, 440,185.68 and 198,143.04

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Solution

The fourth proportional to 318,821.68, 440,185.68 and 198,143.04 is: 273,569.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,821.68 : 440,185.68 = 198,143.04 : x
  2. Step 2: Convert to fraction form
    318,821.68/440,185.68 = 198,143.04/x
  3. Step 3: Cross multiply
    318,821.68x = 440,185.68 × 198,143.04
  4. Step 4: Simplify right side
    318,821.68x = 87,219,728,799.67
  5. Step 5: Solve for x
    x = 87,219,728,799.67/318,821.68
  6. Step 6: Final answer
    x = 273,569.00

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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.