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Finding the Fourth Proportional to 394,953.46, 545,100.95 and 242,076.69

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Solution

The fourth proportional to 394,953.46, 545,100.95 and 242,076.69 is: 334,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,953.46 : 545,100.95 = 242,076.69 : x
  2. Step 2: Convert to fraction form
    394,953.46/545,100.95 = 242,076.69/x
  3. Step 3: Cross multiply
    394,953.46x = 545,100.95 × 242,076.69
  4. Step 4: Simplify right side
    394,953.46x = 131,956,233,691.86
  5. Step 5: Solve for x
    x = 131,956,233,691.86/394,953.46
  6. Step 6: Final answer
    x = 334,105.78

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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.