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Finding the Fourth Proportional to 307,174.31, 423,902.51 and 171,216.87

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Solution

The fourth proportional to 307,174.31, 423,902.51 and 171,216.87 is: 236,280.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,174.31 : 423,902.51 = 171,216.87 : x
  2. Step 2: Convert to fraction form
    307,174.31/423,902.51 = 171,216.87/x
  3. Step 3: Cross multiply
    307,174.31x = 423,902.51 × 171,216.87
  4. Step 4: Simplify right side
    307,174.31x = 72,579,260,947.34
  5. Step 5: Solve for x
    x = 72,579,260,947.34/307,174.31
  6. Step 6: Final answer
    x = 236,280.37

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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.