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Finding the Fourth Proportional to 394,468.50, 544,615.98 and 303,653.72

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Solution

The fourth proportional to 394,468.50, 544,615.98 and 303,653.72 is: 419,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,468.50 : 544,615.98 = 303,653.72 : x
  2. Step 2: Convert to fraction form
    394,468.50/544,615.98 = 303,653.72/x
  3. Step 3: Cross multiply
    394,468.50x = 544,615.98 × 303,653.72
  4. Step 4: Simplify right side
    394,468.50x = 165,374,668,298.45
  5. Step 5: Solve for x
    x = 165,374,668,298.45/394,468.50
  6. Step 6: Final answer
    x = 419,234.16

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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.