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Finding the Fourth Proportional to 243,993.72, 366,009.30 and 84,003.96

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Solution

The fourth proportional to 243,993.72, 366,009.30 and 84,003.96 is: 126,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,993.72 : 366,009.30 = 84,003.96 : x
  2. Step 2: Convert to fraction form
    243,993.72/366,009.30 = 84,003.96/x
  3. Step 3: Cross multiply
    243,993.72x = 366,009.30 × 84,003.96
  4. Step 4: Simplify right side
    243,993.72x = 30,746,230,596.83
  5. Step 5: Solve for x
    x = 30,746,230,596.83/243,993.72
  6. Step 6: Final answer
    x = 126,012.39

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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.