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Finding the Fourth Proportional to 279,775.68, 419,661.36 and 80,100.96

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Solution

The fourth proportional to 279,775.68, 419,661.36 and 80,100.96 is: 120,150.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,775.68 : 419,661.36 = 80,100.96 : x
  2. Step 2: Convert to fraction form
    279,775.68/419,661.36 = 80,100.96/x
  3. Step 3: Cross multiply
    279,775.68x = 419,661.36 × 80,100.96
  4. Step 4: Simplify right side
    279,775.68x = 33,615,277,810.91
  5. Step 5: Solve for x
    x = 33,615,277,810.91/279,775.68
  6. Step 6: Final answer
    x = 120,150.82

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1.5x scale

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.