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Finding the Fourth Proportional to 572,311.36, 859,309.68 and 320,086

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Solution

The fourth proportional to 572,311.36, 859,309.68 and 320,086 is: 480,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,311.36 : 859,309.68 = 320,086 : x
  2. Step 2: Convert to fraction form
    572,311.36/859,309.68 = 320,086/x
  3. Step 3: Cross multiply
    572,311.36x = 859,309.68 × 320,086
  4. Step 4: Simplify right side
    572,311.36x = 275,052,998,232.48
  5. Step 5: Solve for x
    x = 275,052,998,232.48/572,311.36
  6. Step 6: Final answer
    x = 480,600.28

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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.