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Finding the Fourth Proportional to 202,800.85, 303,986.75 and 76,386.39

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Solution

The fourth proportional to 202,800.85, 303,986.75 and 76,386.39 is: 114,498.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,800.85 : 303,986.75 = 76,386.39 : x
  2. Step 2: Convert to fraction form
    202,800.85/303,986.75 = 76,386.39/x
  3. Step 3: Cross multiply
    202,800.85x = 303,986.75 × 76,386.39
  4. Step 4: Simplify right side
    202,800.85x = 23,220,450,440.33
  5. Step 5: Solve for x
    x = 23,220,450,440.33/202,800.85
  6. Step 6: Final answer
    x = 114,498.79

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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.