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Finding the Fourth Proportional to 394,358.64, 544,213.72 and 215,510.64

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Solution

The fourth proportional to 394,358.64, 544,213.72 and 215,510.64 is: 297,404.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,358.64 : 544,213.72 = 215,510.64 : x
  2. Step 2: Convert to fraction form
    394,358.64/544,213.72 = 215,510.64/x
  3. Step 3: Cross multiply
    394,358.64x = 544,213.72 × 215,510.64
  4. Step 4: Simplify right side
    394,358.64x = 117,283,847,093.98
  5. Step 5: Solve for x
    x = 117,283,847,093.98/394,358.64
  6. Step 6: Final answer
    x = 297,404.03

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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.