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Finding the Fourth Proportional to 222,031.72, 306,397.50 and 121,427.56

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Solution

The fourth proportional to 222,031.72, 306,397.50 and 121,427.56 is: 167,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,031.72 : 306,397.50 = 121,427.56 : x
  2. Step 2: Convert to fraction form
    222,031.72/306,397.50 = 121,427.56/x
  3. Step 3: Cross multiply
    222,031.72x = 306,397.50 × 121,427.56
  4. Step 4: Simplify right side
    222,031.72x = 37,205,100,815.10
  5. Step 5: Solve for x
    x = 37,205,100,815.10/222,031.72
  6. Step 6: Final answer
    x = 167,566.60

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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.