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Finding the Fourth Proportional to 219,027.60, 328,541.40 and 206,780.40

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Solution

The fourth proportional to 219,027.60, 328,541.40 and 206,780.40 is: 310,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,027.60 : 328,541.40 = 206,780.40 : x
  2. Step 2: Convert to fraction form
    219,027.60/328,541.40 = 206,780.40/x
  3. Step 3: Cross multiply
    219,027.60x = 328,541.40 × 206,780.40
  4. Step 4: Simplify right side
    219,027.60x = 67,935,922,108.56
  5. Step 5: Solve for x
    x = 67,935,922,108.56/219,027.60
  6. Step 6: Final answer
    x = 310,170.60

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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.