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Finding the Fourth Proportional to 320,732.16, 481,208.64 and 143,361.60

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Solution

The fourth proportional to 320,732.16, 481,208.64 and 143,361.60 is: 215,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,732.16 : 481,208.64 = 143,361.60 : x
  2. Step 2: Convert to fraction form
    320,732.16/481,208.64 = 143,361.60/x
  3. Step 3: Cross multiply
    320,732.16x = 481,208.64 × 143,361.60
  4. Step 4: Simplify right side
    320,732.16x = 68,986,840,564.22
  5. Step 5: Solve for x
    x = 68,986,840,564.22/320,732.16
  6. Step 6: Final answer
    x = 215,091.75

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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.