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Finding the Fourth Proportional to 219,010.91, 328,375.12 and 85,904.62

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Solution

The fourth proportional to 219,010.91, 328,375.12 and 85,904.62 is: 128,801.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,010.91 : 328,375.12 = 85,904.62 : x
  2. Step 2: Convert to fraction form
    219,010.91/328,375.12 = 85,904.62/x
  3. Step 3: Cross multiply
    219,010.91x = 328,375.12 × 85,904.62
  4. Step 4: Simplify right side
    219,010.91x = 28,208,940,257.83
  5. Step 5: Solve for x
    x = 28,208,940,257.83/219,010.91
  6. Step 6: Final answer
    x = 128,801.53

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1.5x scale

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.