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Finding the Fourth Proportional to 216,175.71, 324,755.63 and 156,388.60

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Solution

The fourth proportional to 216,175.71, 324,755.63 and 156,388.60 is: 234,938.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,175.71 : 324,755.63 = 156,388.60 : x
  2. Step 2: Convert to fraction form
    216,175.71/324,755.63 = 156,388.60/x
  3. Step 3: Cross multiply
    216,175.71x = 324,755.63 × 156,388.60
  4. Step 4: Simplify right side
    216,175.71x = 50,788,078,317.82
  5. Step 5: Solve for x
    x = 50,788,078,317.82/216,175.71
  6. Step 6: Final answer
    x = 234,938.88

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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.