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Finding the Fourth Proportional to 256,669.37, 385,069.67 and 106,859.87

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Solution

The fourth proportional to 256,669.37, 385,069.67 and 106,859.87 is: 160,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,669.37 : 385,069.67 = 106,859.87 : x
  2. Step 2: Convert to fraction form
    256,669.37/385,069.67 = 106,859.87/x
  3. Step 3: Cross multiply
    256,669.37x = 385,069.67 × 106,859.87
  4. Step 4: Simplify right side
    256,669.37x = 41,148,496,106.97
  5. Step 5: Solve for x
    x = 41,148,496,106.97/256,669.37
  6. Step 6: Final answer
    x = 160,317.13

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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.