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Finding the Fourth Proportional to 872,223.75, 1,308,336 and 273,231.45

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Solution

The fourth proportional to 872,223.75, 1,308,336 and 273,231.45 is: 409,847.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,223.75 : 1,308,336 = 273,231.45 : x
  2. Step 2: Convert to fraction form
    872,223.75/1,308,336 = 273,231.45/x
  3. Step 3: Cross multiply
    872,223.75x = 1,308,336 × 273,231.45
  4. Step 4: Simplify right side
    872,223.75x = 357,478,542,367.20
  5. Step 5: Solve for x
    x = 357,478,542,367.20/872,223.75
  6. Step 6: Final answer
    x = 409,847.29

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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.