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Finding the Fourth Proportional to 243,699.56, 365,689.06 and 131,379.28

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Solution

The fourth proportional to 243,699.56, 365,689.06 and 131,379.28 is: 197,144.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,699.56 : 365,689.06 = 131,379.28 : x
  2. Step 2: Convert to fraction form
    243,699.56/365,689.06 = 131,379.28/x
  3. Step 3: Cross multiply
    243,699.56x = 365,689.06 × 131,379.28
  4. Step 4: Simplify right side
    243,699.56x = 48,043,965,406.68
  5. Step 5: Solve for x
    x = 48,043,965,406.68/243,699.56
  6. Step 6: Final answer
    x = 197,144.24

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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.