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Finding the Fourth Proportional to 222,410.96, 306,915.72 and 121,806.80

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Solution

The fourth proportional to 222,410.96, 306,915.72 and 121,806.80 is: 168,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,410.96 : 306,915.72 = 121,806.80 : x
  2. Step 2: Convert to fraction form
    222,410.96/306,915.72 = 121,806.80/x
  3. Step 3: Cross multiply
    222,410.96x = 306,915.72 × 121,806.80
  4. Step 4: Simplify right side
    222,410.96x = 37,384,421,722.90
  5. Step 5: Solve for x
    x = 37,384,421,722.90/222,410.96
  6. Step 6: Final answer
    x = 168,087.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.