Home / 311,858.15-430,266-190,873.31

Finding the Fourth Proportional to 311,858.15, 430,266 and 190,873.31

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Solution

The fourth proportional to 311,858.15, 430,266 and 190,873.31 is: 263,345.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,858.15 : 430,266 = 190,873.31 : x
  2. Step 2: Convert to fraction form
    311,858.15/430,266 = 190,873.31/x
  3. Step 3: Cross multiply
    311,858.15x = 430,266 × 190,873.31
  4. Step 4: Simplify right side
    311,858.15x = 82,126,293,449.13
  5. Step 5: Solve for x
    x = 82,126,293,449.13/311,858.15
  6. Step 6: Final answer
    x = 263,345.03

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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.