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Finding the Fourth Proportional to 216,335.22, 324,533.60 and 66,588

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Solution

The fourth proportional to 216,335.22, 324,533.60 and 66,588 is: 99,891.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,335.22 : 324,533.60 = 66,588 : x
  2. Step 2: Convert to fraction form
    216,335.22/324,533.60 = 66,588/x
  3. Step 3: Cross multiply
    216,335.22x = 324,533.60 × 66,588
  4. Step 4: Simplify right side
    216,335.22x = 21,610,043,023.86
  5. Step 5: Solve for x
    x = 21,610,043,023.86/216,335.22
  6. Step 6: Final answer
    x = 99,891.47

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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.