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Finding the Fourth Proportional to 223,374.18, 308,258.76 and 121,399.64

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Solution

The fourth proportional to 223,374.18, 308,258.76 and 121,399.64 is: 167,532.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,374.18 : 308,258.76 = 121,399.64 : x
  2. Step 2: Convert to fraction form
    223,374.18/308,258.76 = 121,399.64/x
  3. Step 3: Cross multiply
    223,374.18x = 308,258.76 × 121,399.64
  4. Step 4: Simplify right side
    223,374.18x = 37,422,500,342.55
  5. Step 5: Solve for x
    x = 37,422,500,342.55/223,374.18
  6. Step 6: Final answer
    x = 167,532.79

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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.