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Finding the Fourth Proportional to 490,683.40, 736,494.90 and 254,195.80

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Solution

The fourth proportional to 490,683.40, 736,494.90 and 254,195.80 is: 381,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,683.40 : 736,494.90 = 254,195.80 : x
  2. Step 2: Convert to fraction form
    490,683.40/736,494.90 = 254,195.80/x
  3. Step 3: Cross multiply
    490,683.40x = 736,494.90 × 254,195.80
  4. Step 4: Simplify right side
    490,683.40x = 187,213,910,301.42
  5. Step 5: Solve for x
    x = 187,213,910,301.42/490,683.40
  6. Step 6: Final answer
    x = 381,537.08

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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.