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Finding the Fourth Proportional to 243,394.80, 365,229.66 and 131,072.64

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Solution

The fourth proportional to 243,394.80, 365,229.66 and 131,072.64 is: 196,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,394.80 : 365,229.66 = 131,072.64 : x
  2. Step 2: Convert to fraction form
    243,394.80/365,229.66 = 131,072.64/x
  3. Step 3: Cross multiply
    243,394.80x = 365,229.66 × 131,072.64
  4. Step 4: Simplify right side
    243,394.80x = 47,871,615,742.50
  5. Step 5: Solve for x
    x = 47,871,615,742.50/243,394.80
  6. Step 6: Final answer
    x = 196,682.98

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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.