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Finding the Fourth Proportional to 394,981.88, 545,089 and 222,941.74

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Solution

The fourth proportional to 394,981.88, 545,089 and 222,941.74 is: 307,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,981.88 : 545,089 = 222,941.74 : x
  2. Step 2: Convert to fraction form
    394,981.88/545,089 = 222,941.74/x
  3. Step 3: Cross multiply
    394,981.88x = 545,089 × 222,941.74
  4. Step 4: Simplify right side
    394,981.88x = 121,523,090,114.86
  5. Step 5: Solve for x
    x = 121,523,090,114.86/394,981.88
  6. Step 6: Final answer
    x = 307,667.51

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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.