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Finding the Fourth Proportional to 263,856.80, 364,122.60 and 154,939.88

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Solution

The fourth proportional to 263,856.80, 364,122.60 and 154,939.88 is: 213,817.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,856.80 : 364,122.60 = 154,939.88 : x
  2. Step 2: Convert to fraction form
    263,856.80/364,122.60 = 154,939.88/x
  3. Step 3: Cross multiply
    263,856.80x = 364,122.60 × 154,939.88
  4. Step 4: Simplify right side
    263,856.80x = 56,417,111,949.29
  5. Step 5: Solve for x
    x = 56,417,111,949.29/263,856.80
  6. Step 6: Final answer
    x = 213,817.16

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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.