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Finding the Fourth Proportional to 326,647.80, 490,015.44 and 116,287.56

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Solution

The fourth proportional to 326,647.80, 490,015.44 and 116,287.56 is: 174,446.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,647.80 : 490,015.44 = 116,287.56 : x
  2. Step 2: Convert to fraction form
    326,647.80/490,015.44 = 116,287.56/x
  3. Step 3: Cross multiply
    326,647.80x = 490,015.44 × 116,287.56
  4. Step 4: Simplify right side
    326,647.80x = 56,982,699,879.93
  5. Step 5: Solve for x
    x = 56,982,699,879.93/326,647.80
  6. Step 6: Final answer
    x = 174,446.91

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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.