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Finding the Fourth Proportional to 216,309.46, 324,464.92 and 66,548.74

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Solution

The fourth proportional to 216,309.46, 324,464.92 and 66,548.74 is: 99,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,309.46 : 324,464.92 = 66,548.74 : x
  2. Step 2: Convert to fraction form
    216,309.46/324,464.92 = 66,548.74/x
  3. Step 3: Cross multiply
    216,309.46x = 324,464.92 × 66,548.74
  4. Step 4: Simplify right side
    216,309.46x = 21,592,731,600.20
  5. Step 5: Solve for x
    x = 21,592,731,600.20/216,309.46
  6. Step 6: Final answer
    x = 99,823.33

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1.5x scale

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.