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Finding the Fourth Proportional to 394,500.52, 544,400.58 and 215,641

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Solution

The fourth proportional to 394,500.52, 544,400.58 and 215,641 is: 297,579.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,500.52 : 544,400.58 = 215,641 : x
  2. Step 2: Convert to fraction form
    394,500.52/544,400.58 = 215,641/x
  3. Step 3: Cross multiply
    394,500.52x = 544,400.58 × 215,641
  4. Step 4: Simplify right side
    394,500.52x = 117,395,085,471.78
  5. Step 5: Solve for x
    x = 117,395,085,471.78/394,500.52
  6. Step 6: Final answer
    x = 297,579.04

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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.