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Finding the Fourth Proportional to 402,252.40, 603,200.40 and 135,940.60

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Solution

The fourth proportional to 402,252.40, 603,200.40 and 135,940.60 is: 203,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,252.40 : 603,200.40 = 135,940.60 : x
  2. Step 2: Convert to fraction form
    402,252.40/603,200.40 = 135,940.60/x
  3. Step 3: Cross multiply
    402,252.40x = 603,200.40 × 135,940.60
  4. Step 4: Simplify right side
    402,252.40x = 81,999,424,296.24
  5. Step 5: Solve for x
    x = 81,999,424,296.24/402,252.40
  6. Step 6: Final answer
    x = 203,850.68

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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.