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Finding the Fourth Proportional to 397,370.80, 548,355 and 225,300.34

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Solution

The fourth proportional to 397,370.80, 548,355 and 225,300.34 is: 310,905.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,370.80 : 548,355 = 225,300.34 : x
  2. Step 2: Convert to fraction form
    397,370.80/548,355 = 225,300.34/x
  3. Step 3: Cross multiply
    397,370.80x = 548,355 × 225,300.34
  4. Step 4: Simplify right side
    397,370.80x = 123,544,567,940.70
  5. Step 5: Solve for x
    x = 123,544,567,940.70/397,370.80
  6. Step 6: Final answer
    x = 310,905.00

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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.