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Finding the Fourth Proportional to 202,021.90, 303,360.90 and 135,755.80

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Solution

The fourth proportional to 202,021.90, 303,360.90 and 135,755.80 is: 203,854.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,021.90 : 303,360.90 = 135,755.80 : x
  2. Step 2: Convert to fraction form
    202,021.90/303,360.90 = 135,755.80/x
  3. Step 3: Cross multiply
    202,021.90x = 303,360.90 × 135,755.80
  4. Step 4: Simplify right side
    202,021.90x = 41,183,001,668.22
  5. Step 5: Solve for x
    x = 41,183,001,668.22/202,021.90
  6. Step 6: Final answer
    x = 203,854.14

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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.