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Finding the Fourth Proportional to 491,245.64, 736,868.41 and 136,259.67

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Solution

The fourth proportional to 491,245.64, 736,868.41 and 136,259.67 is: 204,389.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,245.64 : 736,868.41 = 136,259.67 : x
  2. Step 2: Convert to fraction form
    491,245.64/736,868.41 = 136,259.67/x
  3. Step 3: Cross multiply
    491,245.64x = 736,868.41 × 136,259.67
  4. Step 4: Simplify right side
    491,245.64x = 100,405,446,039.38
  5. Step 5: Solve for x
    x = 100,405,446,039.38/491,245.64
  6. Step 6: Final answer
    x = 204,389.49

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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.