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Finding the Fourth Proportional to 248,678, 343,175.68 and 135,500.72

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Solution

The fourth proportional to 248,678, 343,175.68 and 135,500.72 is: 186,991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,678 : 343,175.68 = 135,500.72 : x
  2. Step 2: Convert to fraction form
    248,678/343,175.68 = 135,500.72/x
  3. Step 3: Cross multiply
    248,678x = 343,175.68 × 135,500.72
  4. Step 4: Simplify right side
    248,678x = 46,500,551,726.49
  5. Step 5: Solve for x
    x = 46,500,551,726.49/248,678
  6. Step 6: Final answer
    x = 186,991.02

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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.