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Finding the Fourth Proportional to 397,485.36, 548,519.04 and 225,434.88

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Solution

The fourth proportional to 397,485.36, 548,519.04 and 225,434.88 is: 311,094.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,485.36 : 548,519.04 = 225,434.88 : x
  2. Step 2: Convert to fraction form
    397,485.36/548,519.04 = 225,434.88/x
  3. Step 3: Cross multiply
    397,485.36x = 548,519.04 × 225,434.88
  4. Step 4: Simplify right side
    397,485.36x = 123,655,323,960.12
  5. Step 5: Solve for x
    x = 123,655,323,960.12/397,485.36
  6. Step 6: Final answer
    x = 311,094.03

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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.