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Finding the Fourth Proportional to 248,920.38, 343,509.48 and 135,743.16

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Solution

The fourth proportional to 248,920.38, 343,509.48 and 135,743.16 is: 187,325.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,920.38 : 343,509.48 = 135,743.16 : x
  2. Step 2: Convert to fraction form
    248,920.38/343,509.48 = 135,743.16/x
  3. Step 3: Cross multiply
    248,920.38x = 343,509.48 × 135,743.16
  4. Step 4: Simplify right side
    248,920.38x = 46,629,062,305.16
  5. Step 5: Solve for x
    x = 46,629,062,305.16/248,920.38
  6. Step 6: Final answer
    x = 187,325.21

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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.