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Finding the Fourth Proportional to 273,428.50, 377,270.88 and 158,640.64

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Solution

The fourth proportional to 273,428.50, 377,270.88 and 158,640.64 is: 218,889.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,428.50 : 377,270.88 = 158,640.64 : x
  2. Step 2: Convert to fraction form
    273,428.50/377,270.88 = 158,640.64/x
  3. Step 3: Cross multiply
    273,428.50x = 377,270.88 × 158,640.64
  4. Step 4: Simplify right side
    273,428.50x = 59,850,493,856.56
  5. Step 5: Solve for x
    x = 59,850,493,856.56/273,428.50
  6. Step 6: Final answer
    x = 218,889.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.