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Finding the Fourth Proportional to 216,571.16, 324,912.08 and 83,415.66

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Solution

The fourth proportional to 216,571.16, 324,912.08 and 83,415.66 is: 125,144.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,571.16 : 324,912.08 = 83,415.66 : x
  2. Step 2: Convert to fraction form
    216,571.16/324,912.08 = 83,415.66/x
  3. Step 3: Cross multiply
    216,571.16x = 324,912.08 × 83,415.66
  4. Step 4: Simplify right side
    216,571.16x = 27,102,755,595.17
  5. Step 5: Solve for x
    x = 27,102,755,595.17/216,571.16
  6. Step 6: Final answer
    x = 125,144.81

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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.