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Finding the Fourth Proportional to 539,211.06, 744,198.50 and 321,446.45

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Solution

The fourth proportional to 539,211.06, 744,198.50 and 321,446.45 is: 443,648.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,211.06 : 744,198.50 = 321,446.45 : x
  2. Step 2: Convert to fraction form
    539,211.06/744,198.50 = 321,446.45/x
  3. Step 3: Cross multiply
    539,211.06x = 744,198.50 × 321,446.45
  4. Step 4: Simplify right side
    539,211.06x = 239,219,968,584.44
  5. Step 5: Solve for x
    x = 239,219,968,584.44/539,211.06
  6. Step 6: Final answer
    x = 443,648.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.