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Finding the Fourth Proportional to 219,856.80, 329,785.20 and 53,644.80

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Solution

The fourth proportional to 219,856.80, 329,785.20 and 53,644.80 is: 80,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,856.80 : 329,785.20 = 53,644.80 : x
  2. Step 2: Convert to fraction form
    219,856.80/329,785.20 = 53,644.80/x
  3. Step 3: Cross multiply
    219,856.80x = 329,785.20 × 53,644.80
  4. Step 4: Simplify right side
    219,856.80x = 17,691,261,096.96
  5. Step 5: Solve for x
    x = 17,691,261,096.96/219,856.80
  6. Step 6: Final answer
    x = 80,467.20

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1.5x scale

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.