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Finding the Fourth Proportional to 381,748.60, 572,856.90 and 157,216.60

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Solution

The fourth proportional to 381,748.60, 572,856.90 and 157,216.60 is: 235,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,748.60 : 572,856.90 = 157,216.60 : x
  2. Step 2: Convert to fraction form
    381,748.60/572,856.90 = 157,216.60/x
  3. Step 3: Cross multiply
    381,748.60x = 572,856.90 × 157,216.60
  4. Step 4: Simplify right side
    381,748.60x = 90,062,614,104.54
  5. Step 5: Solve for x
    x = 90,062,614,104.54/381,748.60
  6. Step 6: Final answer
    x = 235,921.27

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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.