Home / 318,729.12-477,796.68-108,223.08

Finding the Fourth Proportional to 318,729.12, 477,796.68 and 108,223.08

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Solution

The fourth proportional to 318,729.12, 477,796.68 and 108,223.08 is: 162,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,729.12 : 477,796.68 = 108,223.08 : x
  2. Step 2: Convert to fraction form
    318,729.12/477,796.68 = 108,223.08/x
  3. Step 3: Cross multiply
    318,729.12x = 477,796.68 × 108,223.08
  4. Step 4: Simplify right side
    318,729.12x = 51,708,628,323.37
  5. Step 5: Solve for x
    x = 51,708,628,323.37/318,729.12
  6. Step 6: Final answer
    x = 162,233.77

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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.