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Finding the Fourth Proportional to 313,471.07, 432,722.50 and 211,634.47

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Solution

The fourth proportional to 313,471.07, 432,722.50 and 211,634.47 is: 292,144.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,471.07 : 432,722.50 = 211,634.47 : x
  2. Step 2: Convert to fraction form
    313,471.07/432,722.50 = 211,634.47/x
  3. Step 3: Cross multiply
    313,471.07x = 432,722.50 × 211,634.47
  4. Step 4: Simplify right side
    313,471.07x = 91,578,998,146.84
  5. Step 5: Solve for x
    x = 91,578,998,146.84/313,471.07
  6. Step 6: Final answer
    x = 292,144.97

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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.