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Finding the Fourth Proportional to 320,685.87, 480,893.48 and 96,078.24

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Solution

The fourth proportional to 320,685.87, 480,893.48 and 96,078.24 is: 144,076.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,685.87 : 480,893.48 = 96,078.24 : x
  2. Step 2: Convert to fraction form
    320,685.87/480,893.48 = 96,078.24/x
  3. Step 3: Cross multiply
    320,685.87x = 480,893.48 × 96,078.24
  4. Step 4: Simplify right side
    320,685.87x = 46,203,398,705.48
  5. Step 5: Solve for x
    x = 46,203,398,705.48/320,685.87
  6. Step 6: Final answer
    x = 144,076.81

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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.