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Finding the Fourth Proportional to 216,845.71, 325,129.75 and 104,301.78

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Solution

The fourth proportional to 216,845.71, 325,129.75 and 104,301.78 is: 156,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,845.71 : 325,129.75 = 104,301.78 : x
  2. Step 2: Convert to fraction form
    216,845.71/325,129.75 = 104,301.78/x
  3. Step 3: Cross multiply
    216,845.71x = 325,129.75 × 104,301.78
  4. Step 4: Simplify right side
    216,845.71x = 33,911,610,175.96
  5. Step 5: Solve for x
    x = 33,911,610,175.96/216,845.71
  6. Step 6: Final answer
    x = 156,385.90

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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.