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Finding the Fourth Proportional to 248,779.68, 343,313.82 and 135,600

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Solution

The fourth proportional to 248,779.68, 343,313.82 and 135,600 is: 187,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,779.68 : 343,313.82 = 135,600 : x
  2. Step 2: Convert to fraction form
    248,779.68/343,313.82 = 135,600/x
  3. Step 3: Cross multiply
    248,779.68x = 343,313.82 × 135,600
  4. Step 4: Simplify right side
    248,779.68x = 46,553,353,992
  5. Step 5: Solve for x
    x = 46,553,353,992/248,779.68
  6. Step 6: Final answer
    x = 187,126.83

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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.