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Finding the Fourth Proportional to 265,765.50, 398,649.70 and 68,773.50

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Solution

The fourth proportional to 265,765.50, 398,649.70 and 68,773.50 is: 103,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,765.50 : 398,649.70 = 68,773.50 : x
  2. Step 2: Convert to fraction form
    265,765.50/398,649.70 = 68,773.50/x
  3. Step 3: Cross multiply
    265,765.50x = 398,649.70 × 68,773.50
  4. Step 4: Simplify right side
    265,765.50x = 27,416,535,142.95
  5. Step 5: Solve for x
    x = 27,416,535,142.95/265,765.50
  6. Step 6: Final answer
    x = 103,160.63

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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.