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Finding the Fourth Proportional to 403,540.95, 605,309.81 and 123,057.39

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Solution

The fourth proportional to 403,540.95, 605,309.81 and 123,057.39 is: 184,585.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,540.95 : 605,309.81 = 123,057.39 : x
  2. Step 2: Convert to fraction form
    403,540.95/605,309.81 = 123,057.39/x
  3. Step 3: Cross multiply
    403,540.95x = 605,309.81 × 123,057.39
  4. Step 4: Simplify right side
    403,540.95x = 74,487,844,744.71
  5. Step 5: Solve for x
    x = 74,487,844,744.71/403,540.95
  6. Step 6: Final answer
    x = 184,585.59

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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.