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Finding the Fourth Proportional to 273,991.56, 378,093.18 and 153,108.78

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Solution

The fourth proportional to 273,991.56, 378,093.18 and 153,108.78 is: 211,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,991.56 : 378,093.18 = 153,108.78 : x
  2. Step 2: Convert to fraction form
    273,991.56/378,093.18 = 153,108.78/x
  3. Step 3: Cross multiply
    273,991.56x = 378,093.18 × 153,108.78
  4. Step 4: Simplify right side
    273,991.56x = 57,889,385,516.12
  5. Step 5: Solve for x
    x = 57,889,385,516.12/273,991.56
  6. Step 6: Final answer
    x = 211,281.64

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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.