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Finding the Fourth Proportional to 307,998.09, 425,032.82 and 172,034.02

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Solution

The fourth proportional to 307,998.09, 425,032.82 and 172,034.02 is: 237,404.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,998.09 : 425,032.82 = 172,034.02 : x
  2. Step 2: Convert to fraction form
    307,998.09/425,032.82 = 172,034.02/x
  3. Step 3: Cross multiply
    307,998.09x = 425,032.82 × 172,034.02
  4. Step 4: Simplify right side
    307,998.09x = 73,120,104,656.54
  5. Step 5: Solve for x
    x = 73,120,104,656.54/307,998.09
  6. Step 6: Final answer
    x = 237,404.41

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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.