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Finding the Fourth Proportional to 394,987.42, 592,481.13 and 217,403.02

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Solution

The fourth proportional to 394,987.42, 592,481.13 and 217,403.02 is: 326,104.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,987.42 : 592,481.13 = 217,403.02 : x
  2. Step 2: Convert to fraction form
    394,987.42/592,481.13 = 217,403.02/x
  3. Step 3: Cross multiply
    394,987.42x = 592,481.13 × 217,403.02
  4. Step 4: Simplify right side
    394,987.42x = 128,807,186,955.01
  5. Step 5: Solve for x
    x = 128,807,186,955.01/394,987.42
  6. Step 6: Final answer
    x = 326,104.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.