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Finding the Fourth Proportional to 663,212.40, 994,575.60 and 214,051.20

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Solution

The fourth proportional to 663,212.40, 994,575.60 and 214,051.20 is: 320,998.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,212.40 : 994,575.60 = 214,051.20 : x
  2. Step 2: Convert to fraction form
    663,212.40/994,575.60 = 214,051.20/x
  3. Step 3: Cross multiply
    663,212.40x = 994,575.60 × 214,051.20
  4. Step 4: Simplify right side
    663,212.40x = 212,890,100,670.72
  5. Step 5: Solve for x
    x = 212,890,100,670.72/663,212.40
  6. Step 6: Final answer
    x = 320,998.37

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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.