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Finding the Fourth Proportional to 219,329.65, 329,006.16 and 69,581.91

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Solution

The fourth proportional to 219,329.65, 329,006.16 and 69,581.91 is: 104,376.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,329.65 : 329,006.16 = 69,581.91 : x
  2. Step 2: Convert to fraction form
    219,329.65/329,006.16 = 69,581.91/x
  3. Step 3: Cross multiply
    219,329.65x = 329,006.16 × 69,581.91
  4. Step 4: Simplify right side
    219,329.65x = 22,892,877,014.57
  5. Step 5: Solve for x
    x = 22,892,877,014.57/219,329.65
  6. Step 6: Final answer
    x = 104,376.57

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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.