Home / 312,106.41-431,147.75-248,362.65

Finding the Fourth Proportional to 312,106.41, 431,147.75 and 248,362.65

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Solution

The fourth proportional to 312,106.41, 431,147.75 and 248,362.65 is: 343,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,106.41 : 431,147.75 = 248,362.65 : x
  2. Step 2: Convert to fraction form
    312,106.41/431,147.75 = 248,362.65/x
  3. Step 3: Cross multiply
    312,106.41x = 431,147.75 × 248,362.65
  4. Step 4: Simplify right side
    312,106.41x = 107,080,996,489.72
  5. Step 5: Solve for x
    x = 107,080,996,489.72/312,106.41
  6. Step 6: Final answer
    x = 343,091.31

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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.