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Finding the Fourth Proportional to 322,580.55, 445,170.78 and 177,378.78

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Solution

The fourth proportional to 322,580.55, 445,170.78 and 177,378.78 is: 244,788.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,580.55 : 445,170.78 = 177,378.78 : x
  2. Step 2: Convert to fraction form
    322,580.55/445,170.78 = 177,378.78/x
  3. Step 3: Cross multiply
    322,580.55x = 445,170.78 × 177,378.78
  4. Step 4: Simplify right side
    322,580.55x = 78,963,849,848.05
  5. Step 5: Solve for x
    x = 78,963,849,848.05/322,580.55
  6. Step 6: Final answer
    x = 244,788.01

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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.