Home / 215,621.76-323,495-89,238.64

Finding the Fourth Proportional to 215,621.76, 323,495 and 89,238.64

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Solution

The fourth proportional to 215,621.76, 323,495 and 89,238.64 is: 133,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,621.76 : 323,495 = 89,238.64 : x
  2. Step 2: Convert to fraction form
    215,621.76/323,495 = 89,238.64/x
  3. Step 3: Cross multiply
    215,621.76x = 323,495 × 89,238.64
  4. Step 4: Simplify right side
    215,621.76x = 28,868,253,846.80
  5. Step 5: Solve for x
    x = 28,868,253,846.80/215,621.76
  6. Step 6: Final answer
    x = 133,883.77

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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.