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Finding the Fourth Proportional to 405,167.80, 606,876.90 and 263,450.20

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Solution

The fourth proportional to 405,167.80, 606,876.90 and 263,450.20 is: 394,606.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,167.80 : 606,876.90 = 263,450.20 : x
  2. Step 2: Convert to fraction form
    405,167.80/606,876.90 = 263,450.20/x
  3. Step 3: Cross multiply
    405,167.80x = 606,876.90 × 263,450.20
  4. Step 4: Simplify right side
    405,167.80x = 159,881,840,680.38
  5. Step 5: Solve for x
    x = 159,881,840,680.38/405,167.80
  6. Step 6: Final answer
    x = 394,606.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.