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Finding the Fourth Proportional to 348,356.56, 480,729.80 and 189,380.56

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Solution

The fourth proportional to 348,356.56, 480,729.80 and 189,380.56 is: 261,343.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,356.56 : 480,729.80 = 189,380.56 : x
  2. Step 2: Convert to fraction form
    348,356.56/480,729.80 = 189,380.56/x
  3. Step 3: Cross multiply
    348,356.56x = 480,729.80 × 189,380.56
  4. Step 4: Simplify right side
    348,356.56x = 91,040,878,732.69
  5. Step 5: Solve for x
    x = 91,040,878,732.69/348,356.56
  6. Step 6: Final answer
    x = 261,343.95

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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.