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Finding the Fourth Proportional to 258,099.87, 387,130.67 and 108,334.11

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Solution

The fourth proportional to 258,099.87, 387,130.67 and 108,334.11 is: 162,493.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,099.87 : 387,130.67 = 108,334.11 : x
  2. Step 2: Convert to fraction form
    258,099.87/387,130.67 = 108,334.11/x
  3. Step 3: Cross multiply
    258,099.87x = 387,130.67 × 108,334.11
  4. Step 4: Simplify right side
    258,099.87x = 41,939,456,588.15
  5. Step 5: Solve for x
    x = 41,939,456,588.15/258,099.87
  6. Step 6: Final answer
    x = 162,493.13

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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.