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Finding the Fourth Proportional to 273,930, 378,016.36 and 153,072.28

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Solution

The fourth proportional to 273,930, 378,016.36 and 153,072.28 is: 211,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,930 : 378,016.36 = 153,072.28 : x
  2. Step 2: Convert to fraction form
    273,930/378,016.36 = 153,072.28/x
  3. Step 3: Cross multiply
    273,930x = 378,016.36 × 153,072.28
  4. Step 4: Simplify right side
    273,930x = 57,863,826,102.50
  5. Step 5: Solve for x
    x = 57,863,826,102.50/273,930
  6. Step 6: Final answer
    x = 211,235.81

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1.5x scale

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.