Home / 217,742.76-326,487-84,467.28

Finding the Fourth Proportional to 217,742.76, 326,487 and 84,467.28

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Solution

The fourth proportional to 217,742.76, 326,487 and 84,467.28 is: 126,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,742.76 : 326,487 = 84,467.28 : x
  2. Step 2: Convert to fraction form
    217,742.76/326,487 = 84,467.28/x
  3. Step 3: Cross multiply
    217,742.76x = 326,487 × 84,467.28
  4. Step 4: Simplify right side
    217,742.76x = 27,577,468,845.36
  5. Step 5: Solve for x
    x = 27,577,468,845.36/217,742.76
  6. Step 6: Final answer
    x = 126,651.60

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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.