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Finding the Fourth Proportional to 439,690.77, 659,583.95 and 140,100.93

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Solution

The fourth proportional to 439,690.77, 659,583.95 and 140,100.93 is: 210,166.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,690.77 : 659,583.95 = 140,100.93 : x
  2. Step 2: Convert to fraction form
    439,690.77/659,583.95 = 140,100.93/x
  3. Step 3: Cross multiply
    439,690.77x = 659,583.95 × 140,100.93
  4. Step 4: Simplify right side
    439,690.77x = 92,408,324,107.57
  5. Step 5: Solve for x
    x = 92,408,324,107.57/439,690.77
  6. Step 6: Final answer
    x = 210,166.62

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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.