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Finding the Fourth Proportional to 262,486.88, 393,410.44 and 136,057.42

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Solution

The fourth proportional to 262,486.88, 393,410.44 and 136,057.42 is: 203,920.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,486.88 : 393,410.44 = 136,057.42 : x
  2. Step 2: Convert to fraction form
    262,486.88/393,410.44 = 136,057.42/x
  3. Step 3: Cross multiply
    262,486.88x = 393,410.44 × 136,057.42
  4. Step 4: Simplify right side
    262,486.88x = 53,526,409,467.46
  5. Step 5: Solve for x
    x = 53,526,409,467.46/262,486.88
  6. Step 6: Final answer
    x = 203,920.32

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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.