Home / 276,659.20-414,932.10-76,929.40

Finding the Fourth Proportional to 276,659.20, 414,932.10 and 76,929.40

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Solution

The fourth proportional to 276,659.20, 414,932.10 and 76,929.40 is: 115,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,659.20 : 414,932.10 = 76,929.40 : x
  2. Step 2: Convert to fraction form
    276,659.20/414,932.10 = 76,929.40/x
  3. Step 3: Cross multiply
    276,659.20x = 414,932.10 × 76,929.40
  4. Step 4: Simplify right side
    276,659.20x = 31,920,477,493.74
  5. Step 5: Solve for x
    x = 31,920,477,493.74/276,659.20
  6. Step 6: Final answer
    x = 115,378.33

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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.