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Finding the Fourth Proportional to 320,424.70, 480,600.60 and 83,791.30

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Solution

The fourth proportional to 320,424.70, 480,600.60 and 83,791.30 is: 125,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,424.70 : 480,600.60 = 83,791.30 : x
  2. Step 2: Convert to fraction form
    320,424.70/480,600.60 = 83,791.30/x
  3. Step 3: Cross multiply
    320,424.70x = 480,600.60 × 83,791.30
  4. Step 4: Simplify right side
    320,424.70x = 40,270,149,054.78
  5. Step 5: Solve for x
    x = 40,270,149,054.78/320,424.70
  6. Step 6: Final answer
    x = 125,677.42

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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.