Home / 215,619.76-323,492-89,236.64

Finding the Fourth Proportional to 215,619.76, 323,492 and 89,236.64

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Solution

The fourth proportional to 215,619.76, 323,492 and 89,236.64 is: 133,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,619.76 : 323,492 = 89,236.64 : x
  2. Step 2: Convert to fraction form
    215,619.76/323,492 = 89,236.64/x
  3. Step 3: Cross multiply
    215,619.76x = 323,492 × 89,236.64
  4. Step 4: Simplify right side
    215,619.76x = 28,867,339,146.88
  5. Step 5: Solve for x
    x = 28,867,339,146.88/215,619.76
  6. Step 6: Final answer
    x = 133,880.77

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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.