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Finding the Fourth Proportional to 243,688.96, 365,538.45 and 75,209.39

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Solution

The fourth proportional to 243,688.96, 365,538.45 and 75,209.39 is: 112,815.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,688.96 : 365,538.45 = 75,209.39 : x
  2. Step 2: Convert to fraction form
    243,688.96/365,538.45 = 75,209.39/x
  3. Step 3: Cross multiply
    243,688.96x = 365,538.45 × 75,209.39
  4. Step 4: Simplify right side
    243,688.96x = 27,491,923,846.05
  5. Step 5: Solve for x
    x = 27,491,923,846.05/243,688.96
  6. Step 6: Final answer
    x = 112,815.63

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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.