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Finding the Fourth Proportional to 395,217.41, 545,714.42 and 364,991.67

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Solution

The fourth proportional to 395,217.41, 545,714.42 and 364,991.67 is: 503,978.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,217.41 : 545,714.42 = 364,991.67 : x
  2. Step 2: Convert to fraction form
    395,217.41/545,714.42 = 364,991.67/x
  3. Step 3: Cross multiply
    395,217.41x = 545,714.42 × 364,991.67
  4. Step 4: Simplify right side
    395,217.41x = 199,181,215,673.92
  5. Step 5: Solve for x
    x = 199,181,215,673.92/395,217.41
  6. Step 6: Final answer
    x = 503,978.86

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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.