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Finding the Fourth Proportional to 440,661.28, 660,873.84 and 191,284

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Solution

The fourth proportional to 440,661.28, 660,873.84 and 191,284 is: 286,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,661.28 : 660,873.84 = 191,284 : x
  2. Step 2: Convert to fraction form
    440,661.28/660,873.84 = 191,284/x
  3. Step 3: Cross multiply
    440,661.28x = 660,873.84 × 191,284
  4. Step 4: Simplify right side
    440,661.28x = 126,414,591,610.56
  5. Step 5: Solve for x
    x = 126,414,591,610.56/440,661.28
  6. Step 6: Final answer
    x = 286,874.74

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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.