Home / 308,734.20-426,072.96-172,783.80

Finding the Fourth Proportional to 308,734.20, 426,072.96 and 172,783.80

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Solution

The fourth proportional to 308,734.20, 426,072.96 and 172,783.80 is: 238,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,734.20 : 426,072.96 = 172,783.80 : x
  2. Step 2: Convert to fraction form
    308,734.20/426,072.96 = 172,783.80/x
  3. Step 3: Cross multiply
    308,734.20x = 426,072.96 × 172,783.80
  4. Step 4: Simplify right side
    308,734.20x = 73,618,505,106.05
  5. Step 5: Solve for x
    x = 73,618,505,106.05/308,734.20
  6. Step 6: Final answer
    x = 238,452.70

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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.