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Finding the Fourth Proportional to 353,634.30, 530,579.79 and 218,540.93

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Solution

The fourth proportional to 353,634.30, 530,579.79 and 218,540.93 is: 327,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,634.30 : 530,579.79 = 218,540.93 : x
  2. Step 2: Convert to fraction form
    353,634.30/530,579.79 = 218,540.93/x
  3. Step 3: Cross multiply
    353,634.30x = 530,579.79 × 218,540.93
  4. Step 4: Simplify right side
    353,634.30x = 115,953,398,092.91
  5. Step 5: Solve for x
    x = 115,953,398,092.91/353,634.30
  6. Step 6: Final answer
    x = 327,890.70

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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.