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Finding the Fourth Proportional to 222,157.50, 306,577.35 and 121,555.50

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Solution

The fourth proportional to 222,157.50, 306,577.35 and 121,555.50 is: 167,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,157.50 : 306,577.35 = 121,555.50 : x
  2. Step 2: Convert to fraction form
    222,157.50/306,577.35 = 121,555.50/x
  3. Step 3: Cross multiply
    222,157.50x = 306,577.35 × 121,555.50
  4. Step 4: Simplify right side
    222,157.50x = 37,266,163,067.93
  5. Step 5: Solve for x
    x = 37,266,163,067.93/222,157.50
  6. Step 6: Final answer
    x = 167,746.59

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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.