Home / 339,848.20-509,189.10-221,458.60

Finding the Fourth Proportional to 339,848.20, 509,189.10 and 221,458.60

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Solution

The fourth proportional to 339,848.20, 509,189.10 and 221,458.60 is: 331,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,848.20 : 509,189.10 = 221,458.60 : x
  2. Step 2: Convert to fraction form
    339,848.20/509,189.10 = 221,458.60/x
  3. Step 3: Cross multiply
    339,848.20x = 509,189.10 × 221,458.60
  4. Step 4: Simplify right side
    339,848.20x = 112,764,305,221.26
  5. Step 5: Solve for x
    x = 112,764,305,221.26/339,848.20
  6. Step 6: Final answer
    x = 331,807.86

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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.