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Finding the Fourth Proportional to 223,873.25, 308,943.55 and 121,898.66

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Solution

The fourth proportional to 223,873.25, 308,943.55 and 121,898.66 is: 168,219.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,873.25 : 308,943.55 = 121,898.66 : x
  2. Step 2: Convert to fraction form
    223,873.25/308,943.55 = 121,898.66/x
  3. Step 3: Cross multiply
    223,873.25x = 308,943.55 × 121,898.66
  4. Step 4: Simplify right side
    223,873.25x = 37,659,804,760.64
  5. Step 5: Solve for x
    x = 37,659,804,760.64/223,873.25
  6. Step 6: Final answer
    x = 168,219.31

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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.