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Finding the Fourth Proportional to 490,573.05, 735,717.41 and 190,986.85

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Solution

The fourth proportional to 490,573.05, 735,717.41 and 190,986.85 is: 286,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,573.05 : 735,717.41 = 190,986.85 : x
  2. Step 2: Convert to fraction form
    490,573.05/735,717.41 = 190,986.85/x
  3. Step 3: Cross multiply
    490,573.05x = 735,717.41 × 190,986.85
  4. Step 4: Simplify right side
    490,573.05x = 140,512,350,626.06
  5. Step 5: Solve for x
    x = 140,512,350,626.06/490,573.05
  6. Step 6: Final answer
    x = 286,424.93

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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.