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Finding the Fourth Proportional to 248,658.84, 343,149 and 135,481.62

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Solution

The fourth proportional to 248,658.84, 343,149 and 135,481.62 is: 186,964.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,658.84 : 343,149 = 135,481.62 : x
  2. Step 2: Convert to fraction form
    248,658.84/343,149 = 135,481.62/x
  3. Step 3: Cross multiply
    248,658.84x = 343,149 × 135,481.62
  4. Step 4: Simplify right side
    248,658.84x = 46,490,382,421.38
  5. Step 5: Solve for x
    x = 46,490,382,421.38/248,658.84
  6. Step 6: Final answer
    x = 186,964.53

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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.