Home / 219,015.38-328,558.61-85,823.43

Finding the Fourth Proportional to 219,015.38, 328,558.61 and 85,823.43

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Solution

The fourth proportional to 219,015.38, 328,558.61 and 85,823.43 is: 128,749.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,015.38 : 328,558.61 = 85,823.43 : x
  2. Step 2: Convert to fraction form
    219,015.38/328,558.61 = 85,823.43/x
  3. Step 3: Cross multiply
    219,015.38x = 328,558.61 × 85,823.43
  4. Step 4: Simplify right side
    219,015.38x = 28,198,026,437.12
  5. Step 5: Solve for x
    x = 28,198,026,437.12/219,015.38
  6. Step 6: Final answer
    x = 128,749.07

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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.