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Finding the Fourth Proportional to 308,057.70, 425,104.43 and 172,064.58

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Solution

The fourth proportional to 308,057.70, 425,104.43 and 172,064.58 is: 237,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,057.70 : 425,104.43 = 172,064.58 : x
  2. Step 2: Convert to fraction form
    308,057.70/425,104.43 = 172,064.58/x
  3. Step 3: Cross multiply
    308,057.70x = 425,104.43 × 172,064.58
  4. Step 4: Simplify right side
    308,057.70x = 73,145,415,204.09
  5. Step 5: Solve for x
    x = 73,145,415,204.09/308,057.70
  6. Step 6: Final answer
    x = 237,440.63

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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.