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Finding the Fourth Proportional to 394,821.72, 544,853.98 and 213,533.65

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Solution

The fourth proportional to 394,821.72, 544,853.98 and 213,533.65 is: 294,676.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,821.72 : 544,853.98 = 213,533.65 : x
  2. Step 2: Convert to fraction form
    394,821.72/544,853.98 = 213,533.65/x
  3. Step 3: Cross multiply
    394,821.72x = 544,853.98 × 213,533.65
  4. Step 4: Simplify right side
    394,821.72x = 116,344,657,998.76
  5. Step 5: Solve for x
    x = 116,344,657,998.76/394,821.72
  6. Step 6: Final answer
    x = 294,676.44

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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.