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Finding the Fourth Proportional to 403,940.45, 605,908.85 and 104,395.56

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Solution

The fourth proportional to 403,940.45, 605,908.85 and 104,395.56 is: 156,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,940.45 : 605,908.85 = 104,395.56 : x
  2. Step 2: Convert to fraction form
    403,940.45/605,908.85 = 104,395.56/x
  3. Step 3: Cross multiply
    403,940.45x = 605,908.85 × 104,395.56
  4. Step 4: Simplify right side
    403,940.45x = 63,254,193,182.73
  5. Step 5: Solve for x
    x = 63,254,193,182.73/403,940.45
  6. Step 6: Final answer
    x = 156,592.87

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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.