Home / 318,934.20-477,825.30-185,705.40

Finding the Fourth Proportional to 318,934.20, 477,825.30 and 185,705.40

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Solution

The fourth proportional to 318,934.20, 477,825.30 and 185,705.40 is: 278,222.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,934.20 : 477,825.30 = 185,705.40 : x
  2. Step 2: Convert to fraction form
    318,934.20/477,825.30 = 185,705.40/x
  3. Step 3: Cross multiply
    318,934.20x = 477,825.30 × 185,705.40
  4. Step 4: Simplify right side
    318,934.20x = 88,734,738,466.62
  5. Step 5: Solve for x
    x = 88,734,738,466.62/318,934.20
  6. Step 6: Final answer
    x = 278,222.71

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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.