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Finding the Fourth Proportional to 452,361.60, 678,879.36 and 172,425.60

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Solution

The fourth proportional to 452,361.60, 678,879.36 and 172,425.60 is: 258,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,361.60 : 678,879.36 = 172,425.60 : x
  2. Step 2: Convert to fraction form
    452,361.60/678,879.36 = 172,425.60/x
  3. Step 3: Cross multiply
    452,361.60x = 678,879.36 × 172,425.60
  4. Step 4: Simplify right side
    452,361.60x = 117,056,180,975.62
  5. Step 5: Solve for x
    x = 117,056,180,975.62/452,361.60
  6. Step 6: Final answer
    x = 258,766.84

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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.