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Finding the Fourth Proportional to 394,331.76, 544,177.44 and 215,483.76

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Solution

The fourth proportional to 394,331.76, 544,177.44 and 215,483.76 is: 297,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,331.76 : 544,177.44 = 215,483.76 : x
  2. Step 2: Convert to fraction form
    394,331.76/544,177.44 = 215,483.76/x
  3. Step 3: Cross multiply
    394,331.76x = 544,177.44 × 215,483.76
  4. Step 4: Simplify right side
    394,331.76x = 117,261,400,878.37
  5. Step 5: Solve for x
    x = 117,261,400,878.37/394,331.76
  6. Step 6: Final answer
    x = 297,367.38

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1.5x scale

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.