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Finding the Fourth Proportional to 216,220.43, 324,331.80 and 141,811.78

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Solution

The fourth proportional to 216,220.43, 324,331.80 and 141,811.78 is: 212,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,220.43 : 324,331.80 = 141,811.78 : x
  2. Step 2: Convert to fraction form
    216,220.43/324,331.80 = 141,811.78/x
  3. Step 3: Cross multiply
    216,220.43x = 324,331.80 × 141,811.78
  4. Step 4: Simplify right side
    216,220.43x = 45,994,068,246.95
  5. Step 5: Solve for x
    x = 45,994,068,246.95/216,220.43
  6. Step 6: Final answer
    x = 212,718.42

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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.