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Finding the Fourth Proportional to 219,630.30, 329,445.45 and 61,856.70

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Solution

The fourth proportional to 219,630.30, 329,445.45 and 61,856.70 is: 92,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,630.30 : 329,445.45 = 61,856.70 : x
  2. Step 2: Convert to fraction form
    219,630.30/329,445.45 = 61,856.70/x
  3. Step 3: Cross multiply
    219,630.30x = 329,445.45 × 61,856.70
  4. Step 4: Simplify right side
    219,630.30x = 20,378,408,367.02
  5. Step 5: Solve for x
    x = 20,378,408,367.02/219,630.30
  6. Step 6: Final answer
    x = 92,785.05

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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.