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Finding the Fourth Proportional to 276,846.52, 415,278.75 and 87,308.71

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Solution

The fourth proportional to 276,846.52, 415,278.75 and 87,308.71 is: 130,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,846.52 : 415,278.75 = 87,308.71 : x
  2. Step 2: Convert to fraction form
    276,846.52/415,278.75 = 87,308.71/x
  3. Step 3: Cross multiply
    276,846.52x = 415,278.75 × 87,308.71
  4. Step 4: Simplify right side
    276,846.52x = 36,257,453,509.20
  5. Step 5: Solve for x
    x = 36,257,453,509.20/276,846.52
  6. Step 6: Final answer
    x = 130,965.90

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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.