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Finding the Fourth Proportional to 223,709.27, 308,712.58 and 121,732.37

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Solution

The fourth proportional to 223,709.27, 308,712.58 and 121,732.37 is: 167,987.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,709.27 : 308,712.58 = 121,732.37 : x
  2. Step 2: Convert to fraction form
    223,709.27/308,712.58 = 121,732.37/x
  3. Step 3: Cross multiply
    223,709.27x = 308,712.58 × 121,732.37
  4. Step 4: Simplify right side
    223,709.27x = 37,580,312,164.32
  5. Step 5: Solve for x
    x = 37,580,312,164.32/223,709.27
  6. Step 6: Final answer
    x = 167,987.28

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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.