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Finding the Fourth Proportional to 223,620.66, 308,587.60 and 121,646.25

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Solution

The fourth proportional to 223,620.66, 308,587.60 and 121,646.25 is: 167,866.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,620.66 : 308,587.60 = 121,646.25 : x
  2. Step 2: Convert to fraction form
    223,620.66/308,587.60 = 121,646.25/x
  3. Step 3: Cross multiply
    223,620.66x = 308,587.60 × 121,646.25
  4. Step 4: Simplify right side
    223,620.66x = 37,538,522,489.45
  5. Step 5: Solve for x
    x = 37,538,522,489.45/223,620.66
  6. Step 6: Final answer
    x = 167,866.97

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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.