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Finding the Fourth Proportional to 779,236.88, 1,168,153.56 and 280,250

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Solution

The fourth proportional to 779,236.88, 1,168,153.56 and 280,250 is: 420,122.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,236.88 : 1,168,153.56 = 280,250 : x
  2. Step 2: Convert to fraction form
    779,236.88/1,168,153.56 = 280,250/x
  3. Step 3: Cross multiply
    779,236.88x = 1,168,153.56 × 280,250
  4. Step 4: Simplify right side
    779,236.88x = 327,375,035,190
  5. Step 5: Solve for x
    x = 327,375,035,190/779,236.88
  6. Step 6: Final answer
    x = 420,122.61

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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.