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Finding the Fourth Proportional to 219,319.83, 328,996.94 and 69,568.65

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Solution

The fourth proportional to 219,319.83, 328,996.94 and 69,568.65 is: 104,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,319.83 : 328,996.94 = 69,568.65 : x
  2. Step 2: Convert to fraction form
    219,319.83/328,996.94 = 69,568.65/x
  3. Step 3: Cross multiply
    219,319.83x = 328,996.94 × 69,568.65
  4. Step 4: Simplify right side
    219,319.83x = 22,887,872,622.09
  5. Step 5: Solve for x
    x = 22,887,872,622.09/219,319.83
  6. Step 6: Final answer
    x = 104,358.43

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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.