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Finding the Fourth Proportional to 394,404.80, 590,829.60 and 236,163.20

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Solution

The fourth proportional to 394,404.80, 590,829.60 and 236,163.20 is: 353,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,404.80 : 590,829.60 = 236,163.20 : x
  2. Step 2: Convert to fraction form
    394,404.80/590,829.60 = 236,163.20/x
  3. Step 3: Cross multiply
    394,404.80x = 590,829.60 × 236,163.20
  4. Step 4: Simplify right side
    394,404.80x = 139,532,208,990.72
  5. Step 5: Solve for x
    x = 139,532,208,990.72/394,404.80
  6. Step 6: Final answer
    x = 353,779.19

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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.