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Finding the Fourth Proportional to 258,226.67, 387,362.34 and 71,238.17

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Solution

The fourth proportional to 258,226.67, 387,362.34 and 71,238.17 is: 106,863.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,226.67 : 387,362.34 = 71,238.17 : x
  2. Step 2: Convert to fraction form
    258,226.67/387,362.34 = 71,238.17/x
  3. Step 3: Cross multiply
    258,226.67x = 387,362.34 × 71,238.17
  4. Step 4: Simplify right side
    258,226.67x = 27,594,983,872.33
  5. Step 5: Solve for x
    x = 27,594,983,872.33/258,226.67
  6. Step 6: Final answer
    x = 106,863.42

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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.