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Finding the Fourth Proportional to 268,342.72, 402,527.84 and 68,664.80

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Solution

The fourth proportional to 268,342.72, 402,527.84 and 68,664.80 is: 103,000.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,342.72 : 402,527.84 = 68,664.80 : x
  2. Step 2: Convert to fraction form
    268,342.72/402,527.84 = 68,664.80/x
  3. Step 3: Cross multiply
    268,342.72x = 402,527.84 × 68,664.80
  4. Step 4: Simplify right side
    268,342.72x = 27,639,493,628.03
  5. Step 5: Solve for x
    x = 27,639,493,628.03/268,342.72
  6. Step 6: Final answer
    x = 103,000.72

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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.