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Finding the Fourth Proportional to 219,351.75, 329,039.28 and 69,603.74

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Solution

The fourth proportional to 219,351.75, 329,039.28 and 69,603.74 is: 104,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,351.75 : 329,039.28 = 69,603.74 : x
  2. Step 2: Convert to fraction form
    219,351.75/329,039.28 = 69,603.74/x
  3. Step 3: Cross multiply
    219,351.75x = 329,039.28 × 69,603.74
  4. Step 4: Simplify right side
    219,351.75x = 22,902,364,083.61
  5. Step 5: Solve for x
    x = 22,902,364,083.61/219,351.75
  6. Step 6: Final answer
    x = 104,409.31

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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.