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Finding the Fourth Proportional to 253,862.40, 380,856.94 and 179,128.67

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Solution

The fourth proportional to 253,862.40, 380,856.94 and 179,128.67 is: 268,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,862.40 : 380,856.94 = 179,128.67 : x
  2. Step 2: Convert to fraction form
    253,862.40/380,856.94 = 179,128.67/x
  3. Step 3: Cross multiply
    253,862.40x = 380,856.94 × 179,128.67
  4. Step 4: Simplify right side
    253,862.40x = 68,222,394,770.36
  5. Step 5: Solve for x
    x = 68,222,394,770.36/253,862.40
  6. Step 6: Final answer
    x = 268,737.69

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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.