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Finding the Fourth Proportional to 218,488.69, 327,771.47 and 90,404.60

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Solution

The fourth proportional to 218,488.69, 327,771.47 and 90,404.60 is: 135,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,488.69 : 327,771.47 = 90,404.60 : x
  2. Step 2: Convert to fraction form
    218,488.69/327,771.47 = 90,404.60/x
  3. Step 3: Cross multiply
    218,488.69x = 327,771.47 × 90,404.60
  4. Step 4: Simplify right side
    218,488.69x = 29,632,048,636.76
  5. Step 5: Solve for x
    x = 29,632,048,636.76/218,488.69
  6. Step 6: Final answer
    x = 135,622.80

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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.