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Finding the Fourth Proportional to 394,607.72, 544,563.64 and 239,514.20

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Solution

The fourth proportional to 394,607.72, 544,563.64 and 239,514.20 is: 330,532.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,607.72 : 544,563.64 = 239,514.20 : x
  2. Step 2: Convert to fraction form
    394,607.72/544,563.64 = 239,514.20/x
  3. Step 3: Cross multiply
    394,607.72x = 544,563.64 × 239,514.20
  4. Step 4: Simplify right side
    394,607.72x = 130,430,724,583.69
  5. Step 5: Solve for x
    x = 130,430,724,583.69/394,607.72
  6. Step 6: Final answer
    x = 330,532.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.