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Finding the Fourth Proportional to 268,119.63, 402,179.09 and 68,440.01

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Solution

The fourth proportional to 268,119.63, 402,179.09 and 68,440.01 is: 102,659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,119.63 : 402,179.09 = 68,440.01 : x
  2. Step 2: Convert to fraction form
    268,119.63/402,179.09 = 68,440.01/x
  3. Step 3: Cross multiply
    268,119.63x = 402,179.09 × 68,440.01
  4. Step 4: Simplify right side
    268,119.63x = 27,525,138,588.30
  5. Step 5: Solve for x
    x = 27,525,138,588.30/268,119.63
  6. Step 6: Final answer
    x = 102,659.92

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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.