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Finding the Fourth Proportional to 491,311.30, 736,884.51 and 136,361.38

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Solution

The fourth proportional to 491,311.30, 736,884.51 and 136,361.38 is: 204,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,311.30 : 736,884.51 = 136,361.38 : x
  2. Step 2: Convert to fraction form
    491,311.30/736,884.51 = 136,361.38/x
  3. Step 3: Cross multiply
    491,311.30x = 736,884.51 × 136,361.38
  4. Step 4: Simplify right side
    491,311.30x = 100,482,588,684.22
  5. Step 5: Solve for x
    x = 100,482,588,684.22/491,311.30
  6. Step 6: Final answer
    x = 204,519.19

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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.