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Finding the Fourth Proportional to 243,326.35, 364,990.38 and 74,845.54

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Solution

The fourth proportional to 243,326.35, 364,990.38 and 74,845.54 is: 112,268.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,326.35 : 364,990.38 = 74,845.54 : x
  2. Step 2: Convert to fraction form
    243,326.35/364,990.38 = 74,845.54/x
  3. Step 3: Cross multiply
    243,326.35x = 364,990.38 × 74,845.54
  4. Step 4: Simplify right side
    243,326.35x = 27,317,901,173.43
  5. Step 5: Solve for x
    x = 27,317,901,173.43/243,326.35
  6. Step 6: Final answer
    x = 112,268.57

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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.