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Finding the Fourth Proportional to 202,440.80, 303,661.20 and 136,085.60

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Solution

The fourth proportional to 202,440.80, 303,661.20 and 136,085.60 is: 204,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,440.80 : 303,661.20 = 136,085.60 : x
  2. Step 2: Convert to fraction form
    202,440.80/303,661.20 = 136,085.60/x
  3. Step 3: Cross multiply
    202,440.80x = 303,661.20 × 136,085.60
  4. Step 4: Simplify right side
    202,440.80x = 41,323,916,598.72
  5. Step 5: Solve for x
    x = 41,323,916,598.72/202,440.80
  6. Step 6: Final answer
    x = 204,128.40

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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.