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Finding the Fourth Proportional to 313,939.73, 470,899.01 and 136,446.77

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Solution

The fourth proportional to 313,939.73, 470,899.01 and 136,446.77 is: 204,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,939.73 : 470,899.01 = 136,446.77 : x
  2. Step 2: Convert to fraction form
    313,939.73/470,899.01 = 136,446.77/x
  3. Step 3: Cross multiply
    313,939.73x = 470,899.01 × 136,446.77
  4. Step 4: Simplify right side
    313,939.73x = 64,252,645,873.97
  5. Step 5: Solve for x
    x = 64,252,645,873.97/313,939.73
  6. Step 6: Final answer
    x = 204,665.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.