Home / 312,085.41-431,118.77-248,341.65

Finding the Fourth Proportional to 312,085.41, 431,118.77 and 248,341.65

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Solution

The fourth proportional to 312,085.41, 431,118.77 and 248,341.65 is: 343,062.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,085.41 : 431,118.77 = 248,341.65 : x
  2. Step 2: Convert to fraction form
    312,085.41/431,118.77 = 248,341.65/x
  3. Step 3: Cross multiply
    312,085.41x = 431,118.77 × 248,341.65
  4. Step 4: Simplify right side
    312,085.41x = 107,064,745,446.06
  5. Step 5: Solve for x
    x = 107,064,745,446.06/312,085.41
  6. Step 6: Final answer
    x = 343,062.32

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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.