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Finding the Fourth Proportional to 403,480.12, 605,310.90 and 123,025.72

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Solution

The fourth proportional to 403,480.12, 605,310.90 and 123,025.72 is: 184,566.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,480.12 : 605,310.90 = 123,025.72 : x
  2. Step 2: Convert to fraction form
    403,480.12/605,310.90 = 123,025.72/x
  3. Step 3: Cross multiply
    403,480.12x = 605,310.90 × 123,025.72
  4. Step 4: Simplify right side
    403,480.12x = 74,468,809,296.35
  5. Step 5: Solve for x
    x = 74,468,809,296.35/403,480.12
  6. Step 6: Final answer
    x = 184,566.24

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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.