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Finding the Fourth Proportional to 441,620.80, 662,541.60 and 142,129.60

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Solution

The fourth proportional to 441,620.80, 662,541.60 and 142,129.60 is: 213,229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,620.80 : 662,541.60 = 142,129.60 : x
  2. Step 2: Convert to fraction form
    441,620.80/662,541.60 = 142,129.60/x
  3. Step 3: Cross multiply
    441,620.80x = 662,541.60 × 142,129.60
  4. Step 4: Simplify right side
    441,620.80x = 94,166,772,591.36
  5. Step 5: Solve for x
    x = 94,166,772,591.36/441,620.80
  6. Step 6: Final answer
    x = 213,229.93

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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.