Home / 231,336.70-319,121.55-140,720.38

Finding the Fourth Proportional to 231,336.70, 319,121.55 and 140,720.38

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Solution

The fourth proportional to 231,336.70, 319,121.55 and 140,720.38 is: 194,119.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,336.70 : 319,121.55 = 140,720.38 : x
  2. Step 2: Convert to fraction form
    231,336.70/319,121.55 = 140,720.38/x
  3. Step 3: Cross multiply
    231,336.70x = 319,121.55 × 140,720.38
  4. Step 4: Simplify right side
    231,336.70x = 44,906,905,782.19
  5. Step 5: Solve for x
    x = 44,906,905,782.19/231,336.70
  6. Step 6: Final answer
    x = 194,119.25

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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.