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Finding the Fourth Proportional to 268,323.31, 402,480.87 and 68,642.01

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Solution

The fourth proportional to 268,323.31, 402,480.87 and 68,642.01 is: 102,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,323.31 : 402,480.87 = 68,642.01 : x
  2. Step 2: Convert to fraction form
    268,323.31/402,480.87 = 68,642.01/x
  3. Step 3: Cross multiply
    268,323.31x = 402,480.87 × 68,642.01
  4. Step 4: Simplify right side
    268,323.31x = 27,627,095,645.94
  5. Step 5: Solve for x
    x = 27,627,095,645.94/268,323.31
  6. Step 6: Final answer
    x = 102,961.97

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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.