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Finding the Fourth Proportional to 403,538.32, 605,305.56 and 123,054.64

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Solution

The fourth proportional to 403,538.32, 605,305.56 and 123,054.64 is: 184,581.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,538.32 : 605,305.56 = 123,054.64 : x
  2. Step 2: Convert to fraction form
    403,538.32/605,305.56 = 123,054.64/x
  3. Step 3: Cross multiply
    403,538.32x = 605,305.56 × 123,054.64
  4. Step 4: Simplify right side
    403,538.32x = 74,485,657,775.80
  5. Step 5: Solve for x
    x = 74,485,657,775.80/403,538.32
  6. Step 6: Final answer
    x = 184,581.37

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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.