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Finding the Fourth Proportional to 468,379.10, 646,190.25 and 307,323.56

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Solution

The fourth proportional to 468,379.10, 646,190.25 and 307,323.56 is: 423,993.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,379.10 : 646,190.25 = 307,323.56 : x
  2. Step 2: Convert to fraction form
    468,379.10/646,190.25 = 307,323.56/x
  3. Step 3: Cross multiply
    468,379.10x = 646,190.25 × 307,323.56
  4. Step 4: Simplify right side
    468,379.10x = 198,589,488,067.29
  5. Step 5: Solve for x
    x = 198,589,488,067.29/468,379.10
  6. Step 6: Final answer
    x = 423,993.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.