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Finding the Fourth Proportional to 216,568.30, 324,898.80 and 64,777.28

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Solution

The fourth proportional to 216,568.30, 324,898.80 and 64,777.28 is: 97,179.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,568.30 : 324,898.80 = 64,777.28 : x
  2. Step 2: Convert to fraction form
    216,568.30/324,898.80 = 64,777.28/x
  3. Step 3: Cross multiply
    216,568.30x = 324,898.80 × 64,777.28
  4. Step 4: Simplify right side
    216,568.30x = 21,046,060,539.26
  5. Step 5: Solve for x
    x = 21,046,060,539.26/216,568.30
  6. Step 6: Final answer
    x = 97,179.78

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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.