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Finding the Fourth Proportional to 323,786.90, 485,680.35 and 252,928.10

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Solution

The fourth proportional to 323,786.90, 485,680.35 and 252,928.10 is: 379,392.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,786.90 : 485,680.35 = 252,928.10 : x
  2. Step 2: Convert to fraction form
    323,786.90/485,680.35 = 252,928.10/x
  3. Step 3: Cross multiply
    323,786.90x = 485,680.35 × 252,928.10
  4. Step 4: Simplify right side
    323,786.90x = 122,842,208,132.84
  5. Step 5: Solve for x
    x = 122,842,208,132.84/323,786.90
  6. Step 6: Final answer
    x = 379,392.15

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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.