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Finding the Fourth Proportional to 320,076.07, 480,185.54 and 120,398.11

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Solution

The fourth proportional to 320,076.07, 480,185.54 and 120,398.11 is: 180,624.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,076.07 : 480,185.54 = 120,398.11 : x
  2. Step 2: Convert to fraction form
    320,076.07/480,185.54 = 120,398.11/x
  3. Step 3: Cross multiply
    320,076.07x = 480,185.54 × 120,398.11
  4. Step 4: Simplify right side
    320,076.07x = 57,813,431,465.33
  5. Step 5: Solve for x
    x = 57,813,431,465.33/320,076.07
  6. Step 6: Final answer
    x = 180,624.04

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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.