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Finding the Fourth Proportional to 397,370.85, 548,355.09 and 225,300.39

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Solution

The fourth proportional to 397,370.85, 548,355.09 and 225,300.39 is: 310,905.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,370.85 : 548,355.09 = 225,300.39 : x
  2. Step 2: Convert to fraction form
    397,370.85/548,355.09 = 225,300.39/x
  3. Step 3: Cross multiply
    397,370.85x = 548,355.09 × 225,300.39
  4. Step 4: Simplify right side
    397,370.85x = 123,544,615,635.49
  5. Step 5: Solve for x
    x = 123,544,615,635.49/397,370.85
  6. Step 6: Final answer
    x = 310,905.08

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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.