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Finding the Fourth Proportional to 219,622.80, 329,448.60 and 61,856.40

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Solution

The fourth proportional to 219,622.80, 329,448.60 and 61,856.40 is: 92,788.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,622.80 : 329,448.60 = 61,856.40 : x
  2. Step 2: Convert to fraction form
    219,622.80/329,448.60 = 61,856.40/x
  3. Step 3: Cross multiply
    219,622.80x = 329,448.60 × 61,856.40
  4. Step 4: Simplify right side
    219,622.80x = 20,378,504,381.04
  5. Step 5: Solve for x
    x = 20,378,504,381.04/219,622.80
  6. Step 6: Final answer
    x = 92,788.66

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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.