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Finding the Fourth Proportional to 362,081, 499,671.78 and 220,769

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Solution

The fourth proportional to 362,081, 499,671.78 and 220,769 is: 304,661.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,081 : 499,671.78 = 220,769 : x
  2. Step 2: Convert to fraction form
    362,081/499,671.78 = 220,769/x
  3. Step 3: Cross multiply
    362,081x = 499,671.78 × 220,769
  4. Step 4: Simplify right side
    362,081x = 110,312,039,198.82
  5. Step 5: Solve for x
    x = 110,312,039,198.82/362,081
  6. Step 6: Final answer
    x = 304,661.22

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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.