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Finding the Fourth Proportional to 258,361.68, 356,571.90 and 145,184.34

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Solution

The fourth proportional to 258,361.68, 356,571.90 and 145,184.34 is: 200,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,361.68 : 356,571.90 = 145,184.34 : x
  2. Step 2: Convert to fraction form
    258,361.68/356,571.90 = 145,184.34/x
  3. Step 3: Cross multiply
    258,361.68x = 356,571.90 × 145,184.34
  4. Step 4: Simplify right side
    258,361.68x = 51,768,655,964.05
  5. Step 5: Solve for x
    x = 51,768,655,964.05/258,361.68
  6. Step 6: Final answer
    x = 200,372.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.