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Finding the Fourth Proportional to 216,221.96, 324,363.95 and 66,474.82

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Solution

The fourth proportional to 216,221.96, 324,363.95 and 66,474.82 is: 99,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,221.96 : 324,363.95 = 66,474.82 : x
  2. Step 2: Convert to fraction form
    216,221.96/324,363.95 = 66,474.82/x
  3. Step 3: Cross multiply
    216,221.96x = 324,363.95 × 66,474.82
  4. Step 4: Simplify right side
    216,221.96x = 21,562,035,513.10
  5. Step 5: Solve for x
    x = 21,562,035,513.10/216,221.96
  6. Step 6: Final answer
    x = 99,721.76

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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.