Home / 311,647.37-429,977.66-190,662.53

Finding the Fourth Proportional to 311,647.37, 429,977.66 and 190,662.53

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Solution

The fourth proportional to 311,647.37, 429,977.66 and 190,662.53 is: 263,055.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,647.37 : 429,977.66 = 190,662.53 : x
  2. Step 2: Convert to fraction form
    311,647.37/429,977.66 = 190,662.53/x
  3. Step 3: Cross multiply
    311,647.37x = 429,977.66 × 190,662.53
  4. Step 4: Simplify right side
    311,647.37x = 81,980,625,395.88
  5. Step 5: Solve for x
    x = 81,980,625,395.88/311,647.37
  6. Step 6: Final answer
    x = 263,055.73

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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.