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Finding the Fourth Proportional to 239,649.86, 330,755.58 and 142,865.59

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Solution

The fourth proportional to 239,649.86, 330,755.58 and 142,865.59 is: 197,177.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,649.86 : 330,755.58 = 142,865.59 : x
  2. Step 2: Convert to fraction form
    239,649.86/330,755.58 = 142,865.59/x
  3. Step 3: Cross multiply
    239,649.86x = 330,755.58 × 142,865.59
  4. Step 4: Simplify right side
    239,649.86x = 47,253,591,082.49
  5. Step 5: Solve for x
    x = 47,253,591,082.49/239,649.86
  6. Step 6: Final answer
    x = 197,177.63

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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.