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Finding the Fourth Proportional to 491,311.80, 736,885.26 and 136,361.88

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Solution

The fourth proportional to 491,311.80, 736,885.26 and 136,361.88 is: 204,519.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,311.80 : 736,885.26 = 136,361.88 : x
  2. Step 2: Convert to fraction form
    491,311.80/736,885.26 = 136,361.88/x
  3. Step 3: Cross multiply
    491,311.80x = 736,885.26 × 136,361.88
  4. Step 4: Simplify right side
    491,311.80x = 100,483,059,397.89
  5. Step 5: Solve for x
    x = 100,483,059,397.89/491,311.80
  6. Step 6: Final answer
    x = 204,519.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.