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Finding the Fourth Proportional to 398,792.96, 550,331.52 and 219,944.96

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Solution

The fourth proportional to 398,792.96, 550,331.52 and 219,944.96 is: 303,522.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,792.96 : 550,331.52 = 219,944.96 : x
  2. Step 2: Convert to fraction form
    398,792.96/550,331.52 = 219,944.96/x
  3. Step 3: Cross multiply
    398,792.96x = 550,331.52 × 219,944.96
  4. Step 4: Simplify right side
    398,792.96x = 121,042,644,153.14
  5. Step 5: Solve for x
    x = 121,042,644,153.14/398,792.96
  6. Step 6: Final answer
    x = 303,522.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.