Home / 219,027.51-328,540.32-85,813.70

Finding the Fourth Proportional to 219,027.51, 328,540.32 and 85,813.70

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Solution

The fourth proportional to 219,027.51, 328,540.32 and 85,813.70 is: 128,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,027.51 : 328,540.32 = 85,813.70 : x
  2. Step 2: Convert to fraction form
    219,027.51/328,540.32 = 85,813.70/x
  3. Step 3: Cross multiply
    219,027.51x = 328,540.32 × 85,813.70
  4. Step 4: Simplify right side
    219,027.51x = 28,193,258,815.68
  5. Step 5: Solve for x
    x = 28,193,258,815.68/219,027.51
  6. Step 6: Final answer
    x = 128,720.17

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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.