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Finding the Fourth Proportional to 219,105.63, 328,625.46 and 69,326.42

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Solution

The fourth proportional to 219,105.63, 328,625.46 and 69,326.42 is: 103,979.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,105.63 : 328,625.46 = 69,326.42 : x
  2. Step 2: Convert to fraction form
    219,105.63/328,625.46 = 69,326.42/x
  3. Step 3: Cross multiply
    219,105.63x = 328,625.46 × 69,326.42
  4. Step 4: Simplify right side
    219,105.63x = 22,782,425,019.53
  5. Step 5: Solve for x
    x = 22,782,425,019.53/219,105.63
  6. Step 6: Final answer
    x = 103,979.19

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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.