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Finding the Fourth Proportional to 394,220.16, 544,024.32 and 215,372.16

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Solution

The fourth proportional to 394,220.16, 544,024.32 and 215,372.16 is: 297,213.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,220.16 : 544,024.32 = 215,372.16 : x
  2. Step 2: Convert to fraction form
    394,220.16/544,024.32 = 215,372.16/x
  3. Step 3: Cross multiply
    394,220.16x = 544,024.32 × 215,372.16
  4. Step 4: Simplify right side
    394,220.16x = 117,167,692,890.93
  5. Step 5: Solve for x
    x = 117,167,692,890.93/394,220.16
  6. Step 6: Final answer
    x = 297,213.85

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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.