Home / 276,319.19-414,478.75-76,639.61

Finding the Fourth Proportional to 276,319.19, 414,478.75 and 76,639.61

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Solution

The fourth proportional to 276,319.19, 414,478.75 and 76,639.61 is: 114,959.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,319.19 : 414,478.75 = 76,639.61 : x
  2. Step 2: Convert to fraction form
    276,319.19/414,478.75 = 76,639.61/x
  3. Step 3: Cross multiply
    276,319.19x = 414,478.75 × 76,639.61
  4. Step 4: Simplify right side
    276,319.19x = 31,765,489,753.29
  5. Step 5: Solve for x
    x = 31,765,489,753.29/276,319.19
  6. Step 6: Final answer
    x = 114,959.41

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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.