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Finding the Fourth Proportional to 308,469.02, 425,684.25 and 172,501.38

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Solution

The fourth proportional to 308,469.02, 425,684.25 and 172,501.38 is: 238,050.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,469.02 : 425,684.25 = 172,501.38 : x
  2. Step 2: Convert to fraction form
    308,469.02/425,684.25 = 172,501.38/x
  3. Step 3: Cross multiply
    308,469.02x = 425,684.25 × 172,501.38
  4. Step 4: Simplify right side
    308,469.02x = 73,431,120,569.27
  5. Step 5: Solve for x
    x = 73,431,120,569.27/308,469.02
  6. Step 6: Final answer
    x = 238,050.23

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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.