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Finding the Fourth Proportional to 268,323.81, 402,481.62 and 68,642.51

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Solution

The fourth proportional to 268,323.81, 402,481.62 and 68,642.51 is: 102,962.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,323.81 : 402,481.62 = 68,642.51 : x
  2. Step 2: Convert to fraction form
    268,323.81/402,481.62 = 68,642.51/x
  3. Step 3: Cross multiply
    268,323.81x = 402,481.62 × 68,642.51
  4. Step 4: Simplify right side
    268,323.81x = 27,627,348,282.45
  5. Step 5: Solve for x
    x = 27,627,348,282.45/268,323.81
  6. Step 6: Final answer
    x = 102,962.72

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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.