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Finding the Fourth Proportional to 276,591.78, 380,893.59 and 240,276.78

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Solution

The fourth proportional to 276,591.78, 380,893.59 and 240,276.78 is: 330,884.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,591.78 : 380,893.59 = 240,276.78 : x
  2. Step 2: Convert to fraction form
    276,591.78/380,893.59 = 240,276.78/x
  3. Step 3: Cross multiply
    276,591.78x = 380,893.59 × 240,276.78
  4. Step 4: Simplify right side
    276,591.78x = 91,519,885,327.84
  5. Step 5: Solve for x
    x = 91,519,885,327.84/276,591.78
  6. Step 6: Final answer
    x = 330,884.33

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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.