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Finding the Fourth Proportional to 279,603.40, 419,055.36 and 220,204.48

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Solution

The fourth proportional to 279,603.40, 419,055.36 and 220,204.48 is: 330,031.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,603.40 : 419,055.36 = 220,204.48 : x
  2. Step 2: Convert to fraction form
    279,603.40/419,055.36 = 220,204.48/x
  3. Step 3: Cross multiply
    279,603.40x = 419,055.36 × 220,204.48
  4. Step 4: Simplify right side
    279,603.40x = 92,277,867,640.01
  5. Step 5: Solve for x
    x = 92,277,867,640.01/279,603.40
  6. Step 6: Final answer
    x = 330,031.28

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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.