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Finding the Fourth Proportional to 394,681.32, 544,652.10 and 215,833.32

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Solution

The fourth proportional to 394,681.32, 544,652.10 and 215,833.32 is: 297,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,681.32 : 544,652.10 = 215,833.32 : x
  2. Step 2: Convert to fraction form
    394,681.32/544,652.10 = 215,833.32/x
  3. Step 3: Cross multiply
    394,681.32x = 544,652.10 × 215,833.32
  4. Step 4: Simplify right side
    394,681.32x = 117,554,070,987.97
  5. Step 5: Solve for x
    x = 117,554,070,987.97/394,681.32
  6. Step 6: Final answer
    x = 297,845.54

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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.