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Finding the Fourth Proportional to 481,443.20, 721,970.40 and 165,737.60

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Solution

The fourth proportional to 481,443.20, 721,970.40 and 165,737.60 is: 248,539.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,443.20 : 721,970.40 = 165,737.60 : x
  2. Step 2: Convert to fraction form
    481,443.20/721,970.40 = 165,737.60/x
  3. Step 3: Cross multiply
    481,443.20x = 721,970.40 × 165,737.60
  4. Step 4: Simplify right side
    481,443.20x = 119,657,641,367.04
  5. Step 5: Solve for x
    x = 119,657,641,367.04/481,443.20
  6. Step 6: Final answer
    x = 248,539.48

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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.