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Finding the Fourth Proportional to 243,305.57, 364,993.09 and 74,839.95

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Solution

The fourth proportional to 243,305.57, 364,993.09 and 74,839.95 is: 112,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,305.57 : 364,993.09 = 74,839.95 : x
  2. Step 2: Convert to fraction form
    243,305.57/364,993.09 = 74,839.95/x
  3. Step 3: Cross multiply
    243,305.57x = 364,993.09 × 74,839.95
  4. Step 4: Simplify right side
    243,305.57x = 27,316,064,418.85
  5. Step 5: Solve for x
    x = 27,316,064,418.85/243,305.57
  6. Step 6: Final answer
    x = 112,270.61

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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.