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Finding the Fourth Proportional to 323,858.60, 485,787.90 and 317,637.80

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Solution

The fourth proportional to 323,858.60, 485,787.90 and 317,637.80 is: 476,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,858.60 : 485,787.90 = 317,637.80 : x
  2. Step 2: Convert to fraction form
    323,858.60/485,787.90 = 317,637.80/x
  3. Step 3: Cross multiply
    323,858.60x = 485,787.90 × 317,637.80
  4. Step 4: Simplify right side
    323,858.60x = 154,304,599,822.62
  5. Step 5: Solve for x
    x = 154,304,599,822.62/323,858.60
  6. Step 6: Final answer
    x = 476,456.70

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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.