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Finding the Fourth Proportional to 403,887.84, 605,940.84 and 123,397.44

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Solution

The fourth proportional to 403,887.84, 605,940.84 and 123,397.44 is: 185,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,887.84 : 605,940.84 = 123,397.44 : x
  2. Step 2: Convert to fraction form
    403,887.84/605,940.84 = 123,397.44/x
  3. Step 3: Cross multiply
    403,887.84x = 605,940.84 × 123,397.44
  4. Step 4: Simplify right side
    403,887.84x = 74,771,548,447.45
  5. Step 5: Solve for x
    x = 74,771,548,447.45/403,887.84
  6. Step 6: Final answer
    x = 185,129.49

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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.