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Finding the Fourth Proportional to 216,359.75, 324,570.33 and 66,612.48

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Solution

The fourth proportional to 216,359.75, 324,570.33 and 66,612.48 is: 99,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,359.75 : 324,570.33 = 66,612.48 : x
  2. Step 2: Convert to fraction form
    216,359.75/324,570.33 = 66,612.48/x
  3. Step 3: Cross multiply
    216,359.75x = 324,570.33 × 66,612.48
  4. Step 4: Simplify right side
    216,359.75x = 21,620,434,615.72
  5. Step 5: Solve for x
    x = 21,620,434,615.72/216,359.75
  6. Step 6: Final answer
    x = 99,928.18

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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.