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Finding the Fourth Proportional to 270,603.80, 405,963.30 and 83,634.20

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Solution

The fourth proportional to 270,603.80, 405,963.30 and 83,634.20 is: 125,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,603.80 : 405,963.30 = 83,634.20 : x
  2. Step 2: Convert to fraction form
    270,603.80/405,963.30 = 83,634.20/x
  3. Step 3: Cross multiply
    270,603.80x = 405,963.30 × 83,634.20
  4. Step 4: Simplify right side
    270,603.80x = 33,952,415,824.86
  5. Step 5: Solve for x
    x = 33,952,415,824.86/270,603.80
  6. Step 6: Final answer
    x = 125,469.10

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1.5x scale

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.