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Finding the Fourth Proportional to 439,608.80, 659,406.04 and 140,085.34

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Solution

The fourth proportional to 439,608.80, 659,406.04 and 140,085.34 is: 210,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,608.80 : 659,406.04 = 140,085.34 : x
  2. Step 2: Convert to fraction form
    439,608.80/659,406.04 = 140,085.34/x
  3. Step 3: Cross multiply
    439,608.80x = 659,406.04 × 140,085.34
  4. Step 4: Simplify right side
    439,608.80x = 92,373,119,311.45
  5. Step 5: Solve for x
    x = 92,373,119,311.45/439,608.80
  6. Step 6: Final answer
    x = 210,125.73

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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.