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Finding the Fourth Proportional to 308,568.82, 425,804.93 and 172,579.22

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Solution

The fourth proportional to 308,568.82, 425,804.93 and 172,579.22 is: 238,148.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,568.82 : 425,804.93 = 172,579.22 : x
  2. Step 2: Convert to fraction form
    308,568.82/425,804.93 = 172,579.22/x
  3. Step 3: Cross multiply
    308,568.82x = 425,804.93 × 172,579.22
  4. Step 4: Simplify right side
    308,568.82x = 73,485,082,691.55
  5. Step 5: Solve for x
    x = 73,485,082,691.55/308,568.82
  6. Step 6: Final answer
    x = 238,148.11

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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.