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Finding the Fourth Proportional to 665,404.25, 998,392.40 and 216,262.85

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Solution

The fourth proportional to 665,404.25, 998,392.40 and 216,262.85 is: 324,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,404.25 : 998,392.40 = 216,262.85 : x
  2. Step 2: Convert to fraction form
    665,404.25/998,392.40 = 216,262.85/x
  3. Step 3: Cross multiply
    665,404.25x = 998,392.40 × 216,262.85
  4. Step 4: Simplify right side
    665,404.25x = 215,915,184,761.03
  5. Step 5: Solve for x
    x = 215,915,184,761.03/665,404.25
  6. Step 6: Final answer
    x = 324,487.23

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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.