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Finding the Fourth Proportional to 223,337.75, 308,205.86 and 121,362.96

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Solution

The fourth proportional to 223,337.75, 308,205.86 and 121,362.96 is: 167,480.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,337.75 : 308,205.86 = 121,362.96 : x
  2. Step 2: Convert to fraction form
    223,337.75/308,205.86 = 121,362.96/x
  3. Step 3: Cross multiply
    223,337.75x = 308,205.86 × 121,362.96
  4. Step 4: Simplify right side
    223,337.75x = 37,404,774,852.13
  5. Step 5: Solve for x
    x = 37,404,774,852.13/223,337.75
  6. Step 6: Final answer
    x = 167,480.76

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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.