Home / 219,148.66-328,589.94-85,869.23

Finding the Fourth Proportional to 219,148.66, 328,589.94 and 85,869.23

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Solution

The fourth proportional to 219,148.66, 328,589.94 and 85,869.23 is: 128,751.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,148.66 : 328,589.94 = 85,869.23 : x
  2. Step 2: Convert to fraction form
    219,148.66/328,589.94 = 85,869.23/x
  3. Step 3: Cross multiply
    219,148.66x = 328,589.94 × 85,869.23
  4. Step 4: Simplify right side
    219,148.66x = 28,215,765,133.55
  5. Step 5: Solve for x
    x = 28,215,765,133.55/219,148.66
  6. Step 6: Final answer
    x = 128,751.71

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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.