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Finding the Fourth Proportional to 216,456.84, 324,685.26 and 131,084.90

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Solution

The fourth proportional to 216,456.84, 324,685.26 and 131,084.90 is: 196,627.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,456.84 : 324,685.26 = 131,084.90 : x
  2. Step 2: Convert to fraction form
    216,456.84/324,685.26 = 131,084.90/x
  3. Step 3: Cross multiply
    216,456.84x = 324,685.26 × 131,084.90
  4. Step 4: Simplify right side
    216,456.84x = 42,561,336,259.07
  5. Step 5: Solve for x
    x = 42,561,336,259.07/216,456.84
  6. Step 6: Final answer
    x = 196,627.36

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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.