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Finding the Fourth Proportional to 378,697.89, 568,027.38 and 112,460.61

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Solution

The fourth proportional to 378,697.89, 568,027.38 and 112,460.61 is: 168,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,697.89 : 568,027.38 = 112,460.61 : x
  2. Step 2: Convert to fraction form
    378,697.89/568,027.38 = 112,460.61/x
  3. Step 3: Cross multiply
    378,697.89x = 568,027.38 × 112,460.61
  4. Step 4: Simplify right side
    378,697.89x = 63,880,705,651.50
  5. Step 5: Solve for x
    x = 63,880,705,651.50/378,697.89
  6. Step 6: Final answer
    x = 168,685.14

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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.