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Finding the Fourth Proportional to 319,957.90, 479,640.12 and 120,410.62

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Solution

The fourth proportional to 319,957.90, 479,640.12 and 120,410.62 is: 180,504.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,957.90 : 479,640.12 = 120,410.62 : x
  2. Step 2: Convert to fraction form
    319,957.90/479,640.12 = 120,410.62/x
  3. Step 3: Cross multiply
    319,957.90x = 479,640.12 × 120,410.62
  4. Step 4: Simplify right side
    319,957.90x = 57,753,764,226.07
  5. Step 5: Solve for x
    x = 57,753,764,226.07/319,957.90
  6. Step 6: Final answer
    x = 180,504.26

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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.