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Finding the Fourth Proportional to 243,043.72, 364,589.88 and 100,859.56

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Solution

The fourth proportional to 243,043.72, 364,589.88 and 100,859.56 is: 151,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,043.72 : 364,589.88 = 100,859.56 : x
  2. Step 2: Convert to fraction form
    243,043.72/364,589.88 = 100,859.56/x
  3. Step 3: Cross multiply
    243,043.72x = 364,589.88 × 100,859.56
  4. Step 4: Simplify right side
    243,043.72x = 36,772,374,877.25
  5. Step 5: Solve for x
    x = 36,772,374,877.25/243,043.72
  6. Step 6: Final answer
    x = 151,299.42

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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.