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Finding the Fourth Proportional to 308,463.08, 425,676.12 and 172,495.47

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Solution

The fourth proportional to 308,463.08, 425,676.12 and 172,495.47 is: 238,042.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,463.08 : 425,676.12 = 172,495.47 : x
  2. Step 2: Convert to fraction form
    308,463.08/425,676.12 = 172,495.47/x
  3. Step 3: Cross multiply
    308,463.08x = 425,676.12 × 172,495.47
  4. Step 4: Simplify right side
    308,463.08x = 73,427,202,387.18
  5. Step 5: Solve for x
    x = 73,427,202,387.18/308,463.08
  6. Step 6: Final answer
    x = 238,042.11

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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.