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Finding the Fourth Proportional to 403,412.91, 605,229.87 and 119,103.36

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Solution

The fourth proportional to 403,412.91, 605,229.87 and 119,103.36 is: 178,687.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,412.91 : 605,229.87 = 119,103.36 : x
  2. Step 2: Convert to fraction form
    403,412.91/605,229.87 = 119,103.36/x
  3. Step 3: Cross multiply
    403,412.91x = 605,229.87 × 119,103.36
  4. Step 4: Simplify right side
    403,412.91x = 72,084,913,019.44
  5. Step 5: Solve for x
    x = 72,084,913,019.44/403,412.91
  6. Step 6: Final answer
    x = 178,687.67

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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.