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Finding the Fourth Proportional to 394,437.12, 544,323.12 and 215,589.12

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Solution

The fourth proportional to 394,437.12, 544,323.12 and 215,589.12 is: 297,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,437.12 : 544,323.12 = 215,589.12 : x
  2. Step 2: Convert to fraction form
    394,437.12/544,323.12 = 215,589.12/x
  3. Step 3: Cross multiply
    394,437.12x = 544,323.12 × 215,589.12
  4. Step 4: Simplify right side
    394,437.12x = 117,350,142,436.45
  5. Step 5: Solve for x
    x = 117,350,142,436.45/394,437.12
  6. Step 6: Final answer
    x = 297,512.93

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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.