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Finding the Fourth Proportional to 198,897.99, 298,347.79 and 80,571.57

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Solution

The fourth proportional to 198,897.99, 298,347.79 and 80,571.57 is: 120,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,897.99 : 298,347.79 = 80,571.57 : x
  2. Step 2: Convert to fraction form
    198,897.99/298,347.79 = 80,571.57/x
  3. Step 3: Cross multiply
    198,897.99x = 298,347.79 × 80,571.57
  4. Step 4: Simplify right side
    198,897.99x = 24,038,349,846.33
  5. Step 5: Solve for x
    x = 24,038,349,846.33/198,897.99
  6. Step 6: Final answer
    x = 120,857.68

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1.5x scale

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.