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Finding the Fourth Proportional to 219,235.71, 328,862.72 and 69,472.69

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Solution

The fourth proportional to 219,235.71, 328,862.72 and 69,472.69 is: 104,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,235.71 : 328,862.72 = 69,472.69 : x
  2. Step 2: Convert to fraction form
    219,235.71/328,862.72 = 69,472.69/x
  3. Step 3: Cross multiply
    219,235.71x = 328,862.72 × 69,472.69
  4. Step 4: Simplify right side
    219,235.71x = 22,846,976,759.86
  5. Step 5: Solve for x
    x = 22,846,976,759.86/219,235.71
  6. Step 6: Final answer
    x = 104,211.93

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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.