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Finding the Fourth Proportional to 440,191.68, 660,200.02 and 215,455.56

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Solution

The fourth proportional to 440,191.68, 660,200.02 and 215,455.56 is: 323,140.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,191.68 : 660,200.02 = 215,455.56 : x
  2. Step 2: Convert to fraction form
    440,191.68/660,200.02 = 215,455.56/x
  3. Step 3: Cross multiply
    440,191.68x = 660,200.02 × 215,455.56
  4. Step 4: Simplify right side
    440,191.68x = 142,243,765,021.11
  5. Step 5: Solve for x
    x = 142,243,765,021.11/440,191.68
  6. Step 6: Final answer
    x = 323,140.51

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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.