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Finding the Fourth Proportional to 276,906.30, 415,390.41 and 87,393.63

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Solution

The fourth proportional to 276,906.30, 415,390.41 and 87,393.63 is: 131,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,906.30 : 415,390.41 = 87,393.63 : x
  2. Step 2: Convert to fraction form
    276,906.30/415,390.41 = 87,393.63/x
  3. Step 3: Cross multiply
    276,906.30x = 415,390.41 × 87,393.63
  4. Step 4: Simplify right side
    276,906.30x = 36,302,475,797.09
  5. Step 5: Solve for x
    x = 36,302,475,797.09/276,906.30
  6. Step 6: Final answer
    x = 131,100.22

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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.