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Finding the Fourth Proportional to 307,996.42, 425,022.36 and 172,029.73

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Solution

The fourth proportional to 307,996.42, 425,022.36 and 172,029.73 is: 237,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,996.42 : 425,022.36 = 172,029.73 : x
  2. Step 2: Convert to fraction form
    307,996.42/425,022.36 = 172,029.73/x
  3. Step 3: Cross multiply
    307,996.42x = 425,022.36 × 172,029.73
  4. Step 4: Simplify right side
    307,996.42x = 73,116,481,834.76
  5. Step 5: Solve for x
    x = 73,116,481,834.76/307,996.42
  6. Step 6: Final answer
    x = 237,393.93

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1.5x scale

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.