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Finding the Fourth Proportional to 209,409.98, 313,933.53 and 84,669.98

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Solution

The fourth proportional to 209,409.98, 313,933.53 and 84,669.98 is: 126,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,409.98 : 313,933.53 = 84,669.98 : x
  2. Step 2: Convert to fraction form
    209,409.98/313,933.53 = 84,669.98/x
  3. Step 3: Cross multiply
    209,409.98x = 313,933.53 × 84,669.98
  4. Step 4: Simplify right side
    209,409.98x = 26,580,745,706.43
  5. Step 5: Solve for x
    x = 26,580,745,706.43/209,409.98
  6. Step 6: Final answer
    x = 126,931.61

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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.