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Finding the Fourth Proportional to 347,215.96, 520,865.61 and 122,530

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Solution

The fourth proportional to 347,215.96, 520,865.61 and 122,530 is: 183,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,215.96 : 520,865.61 = 122,530 : x
  2. Step 2: Convert to fraction form
    347,215.96/520,865.61 = 122,530/x
  3. Step 3: Cross multiply
    347,215.96x = 520,865.61 × 122,530
  4. Step 4: Simplify right side
    347,215.96x = 63,821,663,193.30
  5. Step 5: Solve for x
    x = 63,821,663,193.30/347,215.96
  6. Step 6: Final answer
    x = 183,809.71

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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.