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Finding the Fourth Proportional to 347,231.88, 479,343.79 and 261,223.68

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Solution

The fourth proportional to 347,231.88, 479,343.79 and 261,223.68 is: 360,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,231.88 : 479,343.79 = 261,223.68 : x
  2. Step 2: Convert to fraction form
    347,231.88/479,343.79 = 261,223.68/x
  3. Step 3: Cross multiply
    347,231.88x = 479,343.79 × 261,223.68
  4. Step 4: Simplify right side
    347,231.88x = 125,215,950,933.02
  5. Step 5: Solve for x
    x = 125,215,950,933.02/347,231.88
  6. Step 6: Final answer
    x = 360,611.91

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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.