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Finding the Fourth Proportional to 328,608.60, 492,912.90 and 223,632.60

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Solution

The fourth proportional to 328,608.60, 492,912.90 and 223,632.60 is: 335,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,608.60 : 492,912.90 = 223,632.60 : x
  2. Step 2: Convert to fraction form
    328,608.60/492,912.90 = 223,632.60/x
  3. Step 3: Cross multiply
    328,608.60x = 492,912.90 × 223,632.60
  4. Step 4: Simplify right side
    328,608.60x = 110,231,393,400.54
  5. Step 5: Solve for x
    x = 110,231,393,400.54/328,608.60
  6. Step 6: Final answer
    x = 335,448.90

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Similar ratio
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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.