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Finding the Fourth Proportional to 354,716.76, 530,694.90 and 324,931.44

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Solution

The fourth proportional to 354,716.76, 530,694.90 and 324,931.44 is: 486,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,716.76 : 530,694.90 = 324,931.44 : x
  2. Step 2: Convert to fraction form
    354,716.76/530,694.90 = 324,931.44/x
  3. Step 3: Cross multiply
    354,716.76x = 530,694.90 × 324,931.44
  4. Step 4: Simplify right side
    354,716.76x = 172,439,458,057.66
  5. Step 5: Solve for x
    x = 172,439,458,057.66/354,716.76
  6. Step 6: Final answer
    x = 486,132.82

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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.