Home / 257,839.53-355,811.70-143,117.82

Finding the Fourth Proportional to 257,839.53, 355,811.70 and 143,117.82

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Solution

The fourth proportional to 257,839.53, 355,811.70 and 143,117.82 is: 197,498.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,839.53 : 355,811.70 = 143,117.82 : x
  2. Step 2: Convert to fraction form
    257,839.53/355,811.70 = 143,117.82/x
  3. Step 3: Cross multiply
    257,839.53x = 355,811.70 × 143,117.82
  4. Step 4: Simplify right side
    257,839.53x = 50,922,994,834.49
  5. Step 5: Solve for x
    x = 50,922,994,834.49/257,839.53
  6. Step 6: Final answer
    x = 197,498.79

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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.