Home / 318,501.20-477,825.60-108,139.13

Finding the Fourth Proportional to 318,501.20, 477,825.60 and 108,139.13

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Solution

The fourth proportional to 318,501.20, 477,825.60 and 108,139.13 is: 162,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,501.20 : 477,825.60 = 108,139.13 : x
  2. Step 2: Convert to fraction form
    318,501.20/477,825.60 = 108,139.13/x
  3. Step 3: Cross multiply
    318,501.20x = 477,825.60 × 108,139.13
  4. Step 4: Simplify right side
    318,501.20x = 51,671,642,286.60
  5. Step 5: Solve for x
    x = 51,671,642,286.60/318,501.20
  6. Step 6: Final answer
    x = 162,233.75

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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.