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Finding the Fourth Proportional to 276,012.80, 413,727.60 and 157,428.80

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Solution

The fourth proportional to 276,012.80, 413,727.60 and 157,428.80 is: 235,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,012.80 : 413,727.60 = 157,428.80 : x
  2. Step 2: Convert to fraction form
    276,012.80/413,727.60 = 157,428.80/x
  3. Step 3: Cross multiply
    276,012.80x = 413,727.60 × 157,428.80
  4. Step 4: Simplify right side
    276,012.80x = 65,132,639,594.88
  5. Step 5: Solve for x
    x = 65,132,639,594.88/276,012.80
  6. Step 6: Final answer
    x = 235,976.88

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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.