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Finding the Fourth Proportional to 433,390.74, 649,836.10 and 133,791.18

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Solution

The fourth proportional to 433,390.74, 649,836.10 and 133,791.18 is: 200,609.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,390.74 : 649,836.10 = 133,791.18 : x
  2. Step 2: Convert to fraction form
    433,390.74/649,836.10 = 133,791.18/x
  3. Step 3: Cross multiply
    433,390.74x = 649,836.10 × 133,791.18
  4. Step 4: Simplify right side
    433,390.74x = 86,942,338,625.60
  5. Step 5: Solve for x
    x = 86,942,338,625.60/433,390.74
  6. Step 6: Final answer
    x = 200,609.59

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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.