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Finding the Fourth Proportional to 347,865.84, 520,863.42 and 220,818.33

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Solution

The fourth proportional to 347,865.84, 520,863.42 and 220,818.33 is: 330,633.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,865.84 : 520,863.42 = 220,818.33 : x
  2. Step 2: Convert to fraction form
    347,865.84/520,863.42 = 220,818.33/x
  3. Step 3: Cross multiply
    347,865.84x = 520,863.42 × 220,818.33
  4. Step 4: Simplify right side
    347,865.84x = 115,016,190,562.49
  5. Step 5: Solve for x
    x = 115,016,190,562.49/347,865.84
  6. Step 6: Final answer
    x = 330,633.76

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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.