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Finding the Fourth Proportional to 403,874.75, 605,764.96 and 104,331.84

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Solution

The fourth proportional to 403,874.75, 605,764.96 and 104,331.84 is: 156,485.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,874.75 : 605,764.96 = 104,331.84 : x
  2. Step 2: Convert to fraction form
    403,874.75/605,764.96 = 104,331.84/x
  3. Step 3: Cross multiply
    403,874.75x = 605,764.96 × 104,331.84
  4. Step 4: Simplify right side
    403,874.75x = 63,200,572,884.33
  5. Step 5: Solve for x
    x = 63,200,572,884.33/403,874.75
  6. Step 6: Final answer
    x = 156,485.58

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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.