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Finding the Fourth Proportional to 246,290.68, 339,874.35 and 138,859.78

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Solution

The fourth proportional to 246,290.68, 339,874.35 and 138,859.78 is: 191,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,290.68 : 339,874.35 = 138,859.78 : x
  2. Step 2: Convert to fraction form
    246,290.68/339,874.35 = 138,859.78/x
  3. Step 3: Cross multiply
    246,290.68x = 339,874.35 × 138,859.78
  4. Step 4: Simplify right side
    246,290.68x = 47,194,877,468.64
  5. Step 5: Solve for x
    x = 47,194,877,468.64/246,290.68
  6. Step 6: Final answer
    x = 191,622.67

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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.