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Finding the Fourth Proportional to 307,393.43, 424,202.09 and 171,427.52

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Solution

The fourth proportional to 307,393.43, 424,202.09 and 171,427.52 is: 236,569.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,393.43 : 424,202.09 = 171,427.52 : x
  2. Step 2: Convert to fraction form
    307,393.43/424,202.09 = 171,427.52/x
  3. Step 3: Cross multiply
    307,393.43x = 424,202.09 × 171,427.52
  4. Step 4: Simplify right side
    307,393.43x = 72,719,909,289.37
  5. Step 5: Solve for x
    x = 72,719,909,289.37/307,393.43
  6. Step 6: Final answer
    x = 236,569.50

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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.