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Finding the Fourth Proportional to 260,787.60, 391,181.40 and 201,738.60

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Solution

The fourth proportional to 260,787.60, 391,181.40 and 201,738.60 is: 302,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,787.60 : 391,181.40 = 201,738.60 : x
  2. Step 2: Convert to fraction form
    260,787.60/391,181.40 = 201,738.60/x
  3. Step 3: Cross multiply
    260,787.60x = 391,181.40 × 201,738.60
  4. Step 4: Simplify right side
    260,787.60x = 78,916,387,982.04
  5. Step 5: Solve for x
    x = 78,916,387,982.04/260,787.60
  6. Step 6: Final answer
    x = 302,607.90

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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.