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Finding the Fourth Proportional to 223,809.33, 308,856.86 and 121,835.53

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Solution

The fourth proportional to 223,809.33, 308,856.86 and 121,835.53 is: 168,133.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,809.33 : 308,856.86 = 121,835.53 : x
  2. Step 2: Convert to fraction form
    223,809.33/308,856.86 = 121,835.53/x
  3. Step 3: Cross multiply
    223,809.33x = 308,856.86 × 121,835.53
  4. Step 4: Simplify right side
    223,809.33x = 37,629,739,000.14
  5. Step 5: Solve for x
    x = 37,629,739,000.14/223,809.33
  6. Step 6: Final answer
    x = 168,133.03

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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.