Home / 318,868.13-440,021.42-198,006.83

Finding the Fourth Proportional to 318,868.13, 440,021.42 and 198,006.83

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Solution

The fourth proportional to 318,868.13, 440,021.42 and 198,006.83 is: 273,239.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,868.13 : 440,021.42 = 198,006.83 : x
  2. Step 2: Convert to fraction form
    318,868.13/440,021.42 = 198,006.83/x
  3. Step 3: Cross multiply
    318,868.13x = 440,021.42 × 198,006.83
  4. Step 4: Simplify right side
    318,868.13x = 87,127,243,316.16
  5. Step 5: Solve for x
    x = 87,127,243,316.16/318,868.13
  6. Step 6: Final answer
    x = 273,239.11

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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.