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Finding the Fourth Proportional to 212,356.98, 318,185.37 and 123,360.66

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Solution

The fourth proportional to 212,356.98, 318,185.37 and 123,360.66 is: 184,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,356.98 : 318,185.37 = 123,360.66 : x
  2. Step 2: Convert to fraction form
    212,356.98/318,185.37 = 123,360.66/x
  3. Step 3: Cross multiply
    212,356.98x = 318,185.37 × 123,360.66
  4. Step 4: Simplify right side
    212,356.98x = 39,251,557,245.54
  5. Step 5: Solve for x
    x = 39,251,557,245.54/212,356.98
  6. Step 6: Final answer
    x = 184,837.61

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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.