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Finding the Fourth Proportional to 248,647.08, 343,133 and 135,469.84

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Solution

The fourth proportional to 248,647.08, 343,133 and 135,469.84 is: 186,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,647.08 : 343,133 = 135,469.84 : x
  2. Step 2: Convert to fraction form
    248,647.08/343,133 = 135,469.84/x
  3. Step 3: Cross multiply
    248,647.08x = 343,133 × 135,469.84
  4. Step 4: Simplify right side
    248,647.08x = 46,484,172,608.72
  5. Step 5: Solve for x
    x = 46,484,172,608.72/248,647.08
  6. Step 6: Final answer
    x = 186,948.40

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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.