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Finding the Fourth Proportional to 394,990.56, 545,087.00 and 213,702.37

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Solution

The fourth proportional to 394,990.56, 545,087.00 and 213,702.37 is: 294,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,990.56 : 545,087.00 = 213,702.37 : x
  2. Step 2: Convert to fraction form
    394,990.56/545,087.00 = 213,702.37/x
  3. Step 3: Cross multiply
    394,990.56x = 545,087.00 × 213,702.37
  4. Step 4: Simplify right side
    394,990.56x = 116,486,382,927.73
  5. Step 5: Solve for x
    x = 116,486,382,927.73/394,990.56
  6. Step 6: Final answer
    x = 294,909.28

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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.