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Finding the Fourth Proportional to 268,160.51, 402,240.42 and 68,481.05

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Solution

The fourth proportional to 268,160.51, 402,240.42 and 68,481.05 is: 102,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,160.51 : 402,240.42 = 68,481.05 : x
  2. Step 2: Convert to fraction form
    268,160.51/402,240.42 = 68,481.05/x
  3. Step 3: Cross multiply
    268,160.51x = 402,240.42 × 68,481.05
  4. Step 4: Simplify right side
    268,160.51x = 27,545,844,302.84
  5. Step 5: Solve for x
    x = 27,545,844,302.84/268,160.51
  6. Step 6: Final answer
    x = 102,721.48

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1.5x scale

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.