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Finding the Fourth Proportional to 202,435.80, 303,837.30 and 102,665.40

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Solution

The fourth proportional to 202,435.80, 303,837.30 and 102,665.40 is: 154,091.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,435.80 : 303,837.30 = 102,665.40 : x
  2. Step 2: Convert to fraction form
    202,435.80/303,837.30 = 102,665.40/x
  3. Step 3: Cross multiply
    202,435.80x = 303,837.30 × 102,665.40
  4. Step 4: Simplify right side
    202,435.80x = 31,193,577,939.42
  5. Step 5: Solve for x
    x = 31,193,577,939.42/202,435.80
  6. Step 6: Final answer
    x = 154,091.21

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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.