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Finding the Fourth Proportional to 216,573.75, 324,915.98 and 83,418.25

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Solution

The fourth proportional to 216,573.75, 324,915.98 and 83,418.25 is: 125,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,573.75 : 324,915.98 = 83,418.25 : x
  2. Step 2: Convert to fraction form
    216,573.75/324,915.98 = 83,418.25/x
  3. Step 3: Cross multiply
    216,573.75x = 324,915.98 × 83,418.25
  4. Step 4: Simplify right side
    216,573.75x = 27,103,923,260.93
  5. Step 5: Solve for x
    x = 27,103,923,260.93/216,573.75
  6. Step 6: Final answer
    x = 125,148.70

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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.