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Finding the Fourth Proportional to 218,505.58, 327,758.36 and 78,362.62

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Solution

The fourth proportional to 218,505.58, 327,758.36 and 78,362.62 is: 117,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,505.58 : 327,758.36 = 78,362.62 : x
  2. Step 2: Convert to fraction form
    218,505.58/327,758.36 = 78,362.62/x
  3. Step 3: Cross multiply
    218,505.58x = 327,758.36 × 78,362.62
  4. Step 4: Simplify right side
    218,505.58x = 25,684,003,816.50
  5. Step 5: Solve for x
    x = 25,684,003,816.50/218,505.58
  6. Step 6: Final answer
    x = 117,543.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.