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Finding the Fourth Proportional to 395,215.92, 545,712.36 and 364,990.17

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Solution

The fourth proportional to 395,215.92, 545,712.36 and 364,990.17 is: 503,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,215.92 : 545,712.36 = 364,990.17 : x
  2. Step 2: Convert to fraction form
    395,215.92/545,712.36 = 364,990.17/x
  3. Step 3: Cross multiply
    395,215.92x = 545,712.36 × 364,990.17
  4. Step 4: Simplify right side
    395,215.92x = 199,179,647,047.50
  5. Step 5: Solve for x
    x = 199,179,647,047.50/395,215.92
  6. Step 6: Final answer
    x = 503,976.78

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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.