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Finding the Fourth Proportional to 307,813.20, 461,719.80 and 273,406.80

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Solution

The fourth proportional to 307,813.20, 461,719.80 and 273,406.80 is: 410,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,813.20 : 461,719.80 = 273,406.80 : x
  2. Step 2: Convert to fraction form
    307,813.20/461,719.80 = 273,406.80/x
  3. Step 3: Cross multiply
    307,813.20x = 461,719.80 × 273,406.80
  4. Step 4: Simplify right side
    307,813.20x = 126,237,333,014.64
  5. Step 5: Solve for x
    x = 126,237,333,014.64/307,813.20
  6. Step 6: Final answer
    x = 410,110.20

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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.