Home / 318,481.38-477,722.43-81,826.02

Finding the Fourth Proportional to 318,481.38, 477,722.43 and 81,826.02

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Solution

The fourth proportional to 318,481.38, 477,722.43 and 81,826.02 is: 122,739.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,481.38 : 477,722.43 = 81,826.02 : x
  2. Step 2: Convert to fraction form
    318,481.38/477,722.43 = 81,826.02/x
  3. Step 3: Cross multiply
    318,481.38x = 477,722.43 × 81,826.02
  4. Step 4: Simplify right side
    318,481.38x = 39,090,125,111.63
  5. Step 5: Solve for x
    x = 39,090,125,111.63/318,481.38
  6. Step 6: Final answer
    x = 122,739.12

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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.