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Finding the Fourth Proportional to 394,315.52, 543,953.28 and 266,946.56

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Solution

The fourth proportional to 394,315.52, 543,953.28 and 266,946.56 is: 368,249.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,315.52 : 543,953.28 = 266,946.56 : x
  2. Step 2: Convert to fraction form
    394,315.52/543,953.28 = 266,946.56/x
  3. Step 3: Cross multiply
    394,315.52x = 543,953.28 × 266,946.56
  4. Step 4: Simplify right side
    394,315.52x = 145,206,456,896.72
  5. Step 5: Solve for x
    x = 145,206,456,896.72/394,315.52
  6. Step 6: Final answer
    x = 368,249.41

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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.