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Finding the Fourth Proportional to 395,223.92, 545,723.40 and 364,998.20

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Solution

The fourth proportional to 395,223.92, 545,723.40 and 364,998.20 is: 503,987.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,223.92 : 545,723.40 = 364,998.20 : x
  2. Step 2: Convert to fraction form
    395,223.92/545,723.40 = 364,998.20/x
  3. Step 3: Cross multiply
    395,223.92x = 545,723.40 × 364,998.20
  4. Step 4: Simplify right side
    395,223.92x = 199,188,058,697.88
  5. Step 5: Solve for x
    x = 199,188,058,697.88/395,223.92
  6. Step 6: Final answer
    x = 503,987.86

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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.