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Finding the Fourth Proportional to 273,928.29, 378,019.20 and 153,069.88

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Solution

The fourth proportional to 273,928.29, 378,019.20 and 153,069.88 is: 211,235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,928.29 : 378,019.20 = 153,069.88 : x
  2. Step 2: Convert to fraction form
    273,928.29/378,019.20 = 153,069.88/x
  3. Step 3: Cross multiply
    273,928.29x = 378,019.20 × 153,069.88
  4. Step 4: Simplify right side
    273,928.29x = 57,863,353,581.70
  5. Step 5: Solve for x
    x = 57,863,353,581.70/273,928.29
  6. Step 6: Final answer
    x = 211,235.41

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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.