Home / 219,981.73-329,961.65-120,336.55

Finding the Fourth Proportional to 219,981.73, 329,961.65 and 120,336.55

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Solution

The fourth proportional to 219,981.73, 329,961.65 and 120,336.55 is: 180,498.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,981.73 : 329,961.65 = 120,336.55 : x
  2. Step 2: Convert to fraction form
    219,981.73/329,961.65 = 120,336.55/x
  3. Step 3: Cross multiply
    219,981.73x = 329,961.65 × 120,336.55
  4. Step 4: Simplify right side
    219,981.73x = 39,706,446,593.31
  5. Step 5: Solve for x
    x = 39,706,446,593.31/219,981.73
  6. Step 6: Final answer
    x = 180,498.84

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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.