Home / 276,880.20-415,320.30-89,891.70

Finding the Fourth Proportional to 276,880.20, 415,320.30 and 89,891.70

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Solution

The fourth proportional to 276,880.20, 415,320.30 and 89,891.70 is: 134,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,880.20 : 415,320.30 = 89,891.70 : x
  2. Step 2: Convert to fraction form
    276,880.20/415,320.30 = 89,891.70/x
  3. Step 3: Cross multiply
    276,880.20x = 415,320.30 × 89,891.70
  4. Step 4: Simplify right side
    276,880.20x = 37,333,847,811.51
  5. Step 5: Solve for x
    x = 37,333,847,811.51/276,880.20
  6. Step 6: Final answer
    x = 134,837.55

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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.