Home / 347,905.80-521,469.90-198,217.80

Finding the Fourth Proportional to 347,905.80, 521,469.90 and 198,217.80

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Solution

The fourth proportional to 347,905.80, 521,469.90 and 198,217.80 is: 297,105.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,905.80 : 521,469.90 = 198,217.80 : x
  2. Step 2: Convert to fraction form
    347,905.80/521,469.90 = 198,217.80/x
  3. Step 3: Cross multiply
    347,905.80x = 521,469.90 × 198,217.80
  4. Step 4: Simplify right side
    347,905.80x = 103,364,616,344.22
  5. Step 5: Solve for x
    x = 103,364,616,344.22/347,905.80
  6. Step 6: Final answer
    x = 297,105.18

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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.