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Finding the Fourth Proportional to 441,612.80, 662,529.60 and 142,121.60

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Solution

The fourth proportional to 441,612.80, 662,529.60 and 142,121.60 is: 213,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,612.80 : 662,529.60 = 142,121.60 : x
  2. Step 2: Convert to fraction form
    441,612.80/662,529.60 = 142,121.60/x
  3. Step 3: Cross multiply
    441,612.80x = 662,529.60 × 142,121.60
  4. Step 4: Simplify right side
    441,612.80x = 94,159,766,799.36
  5. Step 5: Solve for x
    x = 94,159,766,799.36/441,612.80
  6. Step 6: Final answer
    x = 213,217.93

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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.