Home / 230,942.72-318,724.26-140,307.78

Finding the Fourth Proportional to 230,942.72, 318,724.26 and 140,307.78

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Solution

The fourth proportional to 230,942.72, 318,724.26 and 140,307.78 is: 193,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,942.72 : 318,724.26 = 140,307.78 : x
  2. Step 2: Convert to fraction form
    230,942.72/318,724.26 = 140,307.78/x
  3. Step 3: Cross multiply
    230,942.72x = 318,724.26 × 140,307.78
  4. Step 4: Simplify right side
    230,942.72x = 44,719,493,352.74
  5. Step 5: Solve for x
    x = 44,719,493,352.74/230,942.72
  6. Step 6: Final answer
    x = 193,638.90

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1.5x scale

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.