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Finding the Fourth Proportional to 307,371.80, 424,174.93 and 171,414.34

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Solution

The fourth proportional to 307,371.80, 424,174.93 and 171,414.34 is: 236,552.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,371.80 : 424,174.93 = 171,414.34 : x
  2. Step 2: Convert to fraction form
    307,371.80/424,174.93 = 171,414.34/x
  3. Step 3: Cross multiply
    307,371.80x = 424,174.93 × 171,414.34
  4. Step 4: Simplify right side
    307,371.80x = 72,709,666,099.03
  5. Step 5: Solve for x
    x = 72,709,666,099.03/307,371.80
  6. Step 6: Final answer
    x = 236,552.82

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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.