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Finding the Fourth Proportional to 440,540.21, 660,487.05 and 140,848.31

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Solution

The fourth proportional to 440,540.21, 660,487.05 and 140,848.31 is: 211,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,540.21 : 660,487.05 = 140,848.31 : x
  2. Step 2: Convert to fraction form
    440,540.21/660,487.05 = 140,848.31/x
  3. Step 3: Cross multiply
    440,540.21x = 660,487.05 × 140,848.31
  4. Step 4: Simplify right side
    440,540.21x = 93,028,481,466.95
  5. Step 5: Solve for x
    x = 93,028,481,466.95/440,540.21
  6. Step 6: Final answer
    x = 211,169.11

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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.