Home / 240,538-331,919.88-143,722.58

Finding the Fourth Proportional to 240,538, 331,919.88 and 143,722.58

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Solution

The fourth proportional to 240,538, 331,919.88 and 143,722.58 is: 198,323.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,538 : 331,919.88 = 143,722.58 : x
  2. Step 2: Convert to fraction form
    240,538/331,919.88 = 143,722.58/x
  3. Step 3: Cross multiply
    240,538x = 331,919.88 × 143,722.58
  4. Step 4: Simplify right side
    240,538x = 47,704,381,506.89
  5. Step 5: Solve for x
    x = 47,704,381,506.89/240,538
  6. Step 6: Final answer
    x = 198,323.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.