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Finding the Fourth Proportional to 198,435.65, 297,694.47 and 65,323.89

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Solution

The fourth proportional to 198,435.65, 297,694.47 and 65,323.89 is: 97,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,435.65 : 297,694.47 = 65,323.89 : x
  2. Step 2: Convert to fraction form
    198,435.65/297,694.47 = 65,323.89/x
  3. Step 3: Cross multiply
    198,435.65x = 297,694.47 × 65,323.89
  4. Step 4: Simplify right side
    198,435.65x = 19,446,560,811.89
  5. Step 5: Solve for x
    x = 19,446,560,811.89/198,435.65
  6. Step 6: Final answer
    x = 97,999.33

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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.