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Finding the Fourth Proportional to 268,162.79, 402,243.80 and 68,483.30

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Solution

The fourth proportional to 268,162.79, 402,243.80 and 68,483.30 is: 102,724.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,162.79 : 402,243.80 = 68,483.30 : x
  2. Step 2: Convert to fraction form
    268,162.79/402,243.80 = 68,483.30/x
  3. Step 3: Cross multiply
    268,162.79x = 402,243.80 × 68,483.30
  4. Step 4: Simplify right side
    268,162.79x = 27,546,980,474.90
  5. Step 5: Solve for x
    x = 27,546,980,474.90/268,162.79
  6. Step 6: Final answer
    x = 102,724.84

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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.