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Finding the Fourth Proportional to 202,391.80, 303,771.30 and 102,621.40

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Solution

The fourth proportional to 202,391.80, 303,771.30 and 102,621.40 is: 154,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,391.80 : 303,771.30 = 102,621.40 : x
  2. Step 2: Convert to fraction form
    202,391.80/303,771.30 = 102,621.40/x
  3. Step 3: Cross multiply
    202,391.80x = 303,771.30 × 102,621.40
  4. Step 4: Simplify right side
    202,391.80x = 31,173,436,085.82
  5. Step 5: Solve for x
    x = 31,173,436,085.82/202,391.80
  6. Step 6: Final answer
    x = 154,025.19

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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.