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Finding the Fourth Proportional to 405,231.80, 606,972.90 and 263,514.20

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Solution

The fourth proportional to 405,231.80, 606,972.90 and 263,514.20 is: 394,702.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,231.80 : 606,972.90 = 263,514.20 : x
  2. Step 2: Convert to fraction form
    405,231.80/606,972.90 = 263,514.20/x
  3. Step 3: Cross multiply
    405,231.80x = 606,972.90 × 263,514.20
  4. Step 4: Simplify right side
    405,231.80x = 159,945,978,165.18
  5. Step 5: Solve for x
    x = 159,945,978,165.18/405,231.80
  6. Step 6: Final answer
    x = 394,702.43

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1.5x scale

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.