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Finding the Fourth Proportional to 440,610.12, 660,915.59 and 120,764.61

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Solution

The fourth proportional to 440,610.12, 660,915.59 and 120,764.61 is: 181,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,610.12 : 660,915.59 = 120,764.61 : x
  2. Step 2: Convert to fraction form
    440,610.12/660,915.59 = 120,764.61/x
  3. Step 3: Cross multiply
    440,610.12x = 660,915.59 × 120,764.61
  4. Step 4: Simplify right side
    440,610.12x = 79,815,212,865.45
  5. Step 5: Solve for x
    x = 79,815,212,865.45/440,610.12
  6. Step 6: Final answer
    x = 181,147.03

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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.