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Finding the Fourth Proportional to 490,794.18, 736,207.64 and 135,778.47

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Solution

The fourth proportional to 490,794.18, 736,207.64 and 135,778.47 is: 203,672.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,794.18 : 736,207.64 = 135,778.47 : x
  2. Step 2: Convert to fraction form
    490,794.18/736,207.64 = 135,778.47/x
  3. Step 3: Cross multiply
    490,794.18x = 736,207.64 × 135,778.47
  4. Step 4: Simplify right side
    490,794.18x = 99,961,146,961.51
  5. Step 5: Solve for x
    x = 99,961,146,961.51/490,794.18
  6. Step 6: Final answer
    x = 203,672.23

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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.