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Finding the Fourth Proportional to 480,453.28, 662,993.92 and 276,471.28

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Solution

The fourth proportional to 480,453.28, 662,993.92 and 276,471.28 is: 381,512.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,453.28 : 662,993.92 = 276,471.28 : x
  2. Step 2: Convert to fraction form
    480,453.28/662,993.92 = 276,471.28/x
  3. Step 3: Cross multiply
    480,453.28x = 662,993.92 × 276,471.28
  4. Step 4: Simplify right side
    480,453.28x = 183,298,777,694.62
  5. Step 5: Solve for x
    x = 183,298,777,694.62/480,453.28
  6. Step 6: Final answer
    x = 381,512.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.