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Finding the Fourth Proportional to 217,380.20, 299,846.60 and 157,039.52

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Solution

The fourth proportional to 217,380.20, 299,846.60 and 157,039.52 is: 216,614.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,380.20 : 299,846.60 = 157,039.52 : x
  2. Step 2: Convert to fraction form
    217,380.20/299,846.60 = 157,039.52/x
  3. Step 3: Cross multiply
    217,380.20x = 299,846.60 × 157,039.52
  4. Step 4: Simplify right side
    217,380.20x = 47,087,766,137.63
  5. Step 5: Solve for x
    x = 47,087,766,137.63/217,380.20
  6. Step 6: Final answer
    x = 216,614.79

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1.5x scale

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.