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Finding the Fourth Proportional to 440,190.68, 660,198.52 and 215,454.56

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Solution

The fourth proportional to 440,190.68, 660,198.52 and 215,454.56 is: 323,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,190.68 : 660,198.52 = 215,454.56 : x
  2. Step 2: Convert to fraction form
    440,190.68/660,198.52 = 215,454.56/x
  3. Step 3: Cross multiply
    440,190.68x = 660,198.52 × 215,454.56
  4. Step 4: Simplify right side
    440,190.68x = 142,242,781,639.25
  5. Step 5: Solve for x
    x = 142,242,781,639.25/440,190.68
  6. Step 6: Final answer
    x = 323,139.01

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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.