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Finding the Fourth Proportional to 202,458.10, 303,687.15 and 71,130.10

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Solution

The fourth proportional to 202,458.10, 303,687.15 and 71,130.10 is: 106,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,458.10 : 303,687.15 = 71,130.10 : x
  2. Step 2: Convert to fraction form
    202,458.10/303,687.15 = 71,130.10/x
  3. Step 3: Cross multiply
    202,458.10x = 303,687.15 × 71,130.10
  4. Step 4: Simplify right side
    202,458.10x = 21,601,297,348.22
  5. Step 5: Solve for x
    x = 21,601,297,348.22/202,458.10
  6. Step 6: Final answer
    x = 106,695.15

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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.