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Finding the Fourth Proportional to 454,812.15, 681,671.48 and 188,435.55

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Solution

The fourth proportional to 454,812.15, 681,671.48 and 188,435.55 is: 282,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,812.15 : 681,671.48 = 188,435.55 : x
  2. Step 2: Convert to fraction form
    454,812.15/681,671.48 = 188,435.55/x
  3. Step 3: Cross multiply
    454,812.15x = 681,671.48 × 188,435.55
  4. Step 4: Simplify right side
    454,812.15x = 128,451,139,310.94
  5. Step 5: Solve for x
    x = 128,451,139,310.94/454,812.15
  6. Step 6: Final answer
    x = 282,426.80

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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.