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Finding the Fourth Proportional to 219,320.83, 328,998.44 and 69,569.65

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Solution

The fourth proportional to 219,320.83, 328,998.44 and 69,569.65 is: 104,359.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,320.83 : 328,998.44 = 69,569.65 : x
  2. Step 2: Convert to fraction form
    219,320.83/328,998.44 = 69,569.65/x
  3. Step 3: Cross multiply
    219,320.83x = 328,998.44 × 69,569.65
  4. Step 4: Simplify right side
    219,320.83x = 22,888,306,321.35
  5. Step 5: Solve for x
    x = 22,888,306,321.35/219,320.83
  6. Step 6: Final answer
    x = 104,359.93

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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.