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Finding the Fourth Proportional to 262,486.38, 393,409.70 and 136,056.92

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Solution

The fourth proportional to 262,486.38, 393,409.70 and 136,056.92 is: 203,919.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,486.38 : 393,409.70 = 136,056.92 : x
  2. Step 2: Convert to fraction form
    262,486.38/393,409.70 = 136,056.92/x
  3. Step 3: Cross multiply
    262,486.38x = 393,409.70 × 136,056.92
  4. Step 4: Simplify right side
    262,486.38x = 53,526,111,399.84
  5. Step 5: Solve for x
    x = 53,526,111,399.84/262,486.38
  6. Step 6: Final answer
    x = 203,919.58

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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.