Home / 219,709.77-329,589-69,915.35

Finding the Fourth Proportional to 219,709.77, 329,589 and 69,915.35

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Solution

The fourth proportional to 219,709.77, 329,589 and 69,915.35 is: 104,880.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,709.77 : 329,589 = 69,915.35 : x
  2. Step 2: Convert to fraction form
    219,709.77/329,589 = 69,915.35/x
  3. Step 3: Cross multiply
    219,709.77x = 329,589 × 69,915.35
  4. Step 4: Simplify right side
    219,709.77x = 23,043,331,115.12
  5. Step 5: Solve for x
    x = 23,043,331,115.12/219,709.77
  6. Step 6: Final answer
    x = 104,880.78

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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.