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Finding the Fourth Proportional to 219,947.60, 329,143.80 and 201,285.20

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Solution

The fourth proportional to 219,947.60, 329,143.80 and 201,285.20 is: 301,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,947.60 : 329,143.80 = 201,285.20 : x
  2. Step 2: Convert to fraction form
    219,947.60/329,143.80 = 201,285.20/x
  3. Step 3: Cross multiply
    219,947.60x = 329,143.80 × 201,285.20
  4. Step 4: Simplify right side
    219,947.60x = 66,251,775,611.76
  5. Step 5: Solve for x
    x = 66,251,775,611.76/219,947.60
  6. Step 6: Final answer
    x = 301,216.18

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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.