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Finding the Fourth Proportional to 307,174.80, 423,905.44 and 171,204.96

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Solution

The fourth proportional to 307,174.80, 423,905.44 and 171,204.96 is: 236,265.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,174.80 : 423,905.44 = 171,204.96 : x
  2. Step 2: Convert to fraction form
    307,174.80/423,905.44 = 171,204.96/x
  3. Step 3: Cross multiply
    307,174.80x = 423,905.44 × 171,204.96
  4. Step 4: Simplify right side
    307,174.80x = 72,574,713,898.98
  5. Step 5: Solve for x
    x = 72,574,713,898.98/307,174.80
  6. Step 6: Final answer
    x = 236,265.19

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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.