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Finding the Fourth Proportional to 394,674.32, 544,642.44 and 215,826.32

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Solution

The fourth proportional to 394,674.32, 544,642.44 and 215,826.32 is: 297,835.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,674.32 : 544,642.44 = 215,826.32 : x
  2. Step 2: Convert to fraction form
    394,674.32/544,642.44 = 215,826.32/x
  3. Step 3: Cross multiply
    394,674.32x = 544,642.44 × 215,826.32
  4. Step 4: Simplify right side
    394,674.32x = 117,548,173,541.02
  5. Step 5: Solve for x
    x = 117,548,173,541.02/394,674.32
  6. Step 6: Final answer
    x = 297,835.88

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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.