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Finding the Fourth Proportional to 320,607.48, 480,891.78 and 83,944.92

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Solution

The fourth proportional to 320,607.48, 480,891.78 and 83,944.92 is: 125,912.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,607.48 : 480,891.78 = 83,944.92 : x
  2. Step 2: Convert to fraction form
    320,607.48/480,891.78 = 83,944.92/x
  3. Step 3: Cross multiply
    320,607.48x = 480,891.78 × 83,944.92
  4. Step 4: Simplify right side
    320,607.48x = 40,368,422,000.76
  5. Step 5: Solve for x
    x = 40,368,422,000.76/320,607.48
  6. Step 6: Final answer
    x = 125,912.29

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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.