Home / 219,027.10-328,540.65-85,911.70

Finding the Fourth Proportional to 219,027.10, 328,540.65 and 85,911.70

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Solution

The fourth proportional to 219,027.10, 328,540.65 and 85,911.70 is: 128,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,027.10 : 328,540.65 = 85,911.70 : x
  2. Step 2: Convert to fraction form
    219,027.10/328,540.65 = 85,911.70/x
  3. Step 3: Cross multiply
    219,027.10x = 328,540.65 × 85,911.70
  4. Step 4: Simplify right side
    219,027.10x = 28,225,485,760.61
  5. Step 5: Solve for x
    x = 28,225,485,760.61/219,027.10
  6. Step 6: Final answer
    x = 128,867.55

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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.