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Finding the Fourth Proportional to 223,502.43, 308,437.19 and 121,528.58

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Solution

The fourth proportional to 223,502.43, 308,437.19 and 121,528.58 is: 167,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,502.43 : 308,437.19 = 121,528.58 : x
  2. Step 2: Convert to fraction form
    223,502.43/308,437.19 = 121,528.58/x
  3. Step 3: Cross multiply
    223,502.43x = 308,437.19 × 121,528.58
  4. Step 4: Simplify right side
    223,502.43x = 37,483,932,481.53
  5. Step 5: Solve for x
    x = 37,483,932,481.53/223,502.43
  6. Step 6: Final answer
    x = 167,711.52

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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.