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Finding the Fourth Proportional to 403,917.30, 605,874.11 and 104,372.42

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Solution

The fourth proportional to 403,917.30, 605,874.11 and 104,372.42 is: 156,558.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,917.30 : 605,874.11 = 104,372.42 : x
  2. Step 2: Convert to fraction form
    403,917.30/605,874.11 = 104,372.42/x
  3. Step 3: Cross multiply
    403,917.30x = 605,874.11 × 104,372.42
  4. Step 4: Simplify right side
    403,917.30x = 63,236,543,524.81
  5. Step 5: Solve for x
    x = 63,236,543,524.81/403,917.30
  6. Step 6: Final answer
    x = 156,558.15

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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.