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Finding the Fourth Proportional to 218,071.98, 300,939.52 and 121,273.73

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Solution

The fourth proportional to 218,071.98, 300,939.52 and 121,273.73 is: 167,357.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,071.98 : 300,939.52 = 121,273.73 : x
  2. Step 2: Convert to fraction form
    218,071.98/300,939.52 = 121,273.73/x
  3. Step 3: Cross multiply
    218,071.98x = 300,939.52 × 121,273.73
  4. Step 4: Simplify right side
    218,071.98x = 36,496,056,073.23
  5. Step 5: Solve for x
    x = 36,496,056,073.23/218,071.98
  6. Step 6: Final answer
    x = 167,357.84

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1.5x scale

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.