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Finding the Fourth Proportional to 394,992.27, 592,549.83 and 128,690.73

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Solution

The fourth proportional to 394,992.27, 592,549.83 and 128,690.73 is: 193,056.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,992.27 : 592,549.83 = 128,690.73 : x
  2. Step 2: Convert to fraction form
    394,992.27/592,549.83 = 128,690.73/x
  3. Step 3: Cross multiply
    394,992.27x = 592,549.83 × 128,690.73
  4. Step 4: Simplify right side
    394,992.27x = 76,255,670,184.08
  5. Step 5: Solve for x
    x = 76,255,670,184.08/394,992.27
  6. Step 6: Final answer
    x = 193,056.11

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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.