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Finding the Fourth Proportional to 366,987.40, 550,481.10 and 352,990.60

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Solution

The fourth proportional to 366,987.40, 550,481.10 and 352,990.60 is: 529,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,987.40 : 550,481.10 = 352,990.60 : x
  2. Step 2: Convert to fraction form
    366,987.40/550,481.10 = 352,990.60/x
  3. Step 3: Cross multiply
    366,987.40x = 550,481.10 × 352,990.60
  4. Step 4: Simplify right side
    366,987.40x = 194,314,653,777.66
  5. Step 5: Solve for x
    x = 194,314,653,777.66/366,987.40
  6. Step 6: Final answer
    x = 529,485.90

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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.