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Finding the Fourth Proportional to 258,227.17, 387,363.08 and 71,238.67

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Solution

The fourth proportional to 258,227.17, 387,363.08 and 71,238.67 is: 106,864.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,227.17 : 387,363.08 = 71,238.67 : x
  2. Step 2: Convert to fraction form
    258,227.17/387,363.08 = 71,238.67/x
  3. Step 3: Cross multiply
    258,227.17x = 387,363.08 × 71,238.67
  4. Step 4: Simplify right side
    258,227.17x = 27,595,230,626.30
  5. Step 5: Solve for x
    x = 27,595,230,626.30/258,227.17
  6. Step 6: Final answer
    x = 106,864.16

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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.