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Finding the Fourth Proportional to 347,212.20, 520,814.52 and 263,486.52

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Solution

The fourth proportional to 347,212.20, 520,814.52 and 263,486.52 is: 395,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,212.20 : 520,814.52 = 263,486.52 : x
  2. Step 2: Convert to fraction form
    347,212.20/520,814.52 = 263,486.52/x
  3. Step 3: Cross multiply
    347,212.20x = 520,814.52 × 263,486.52
  4. Step 4: Simplify right side
    347,212.20x = 137,227,605,440.27
  5. Step 5: Solve for x
    x = 137,227,605,440.27/347,212.20
  6. Step 6: Final answer
    x = 395,226.91

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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.