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Finding the Fourth Proportional to 259,571.40, 389,357.10 and 133,600.20

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Solution

The fourth proportional to 259,571.40, 389,357.10 and 133,600.20 is: 200,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,571.40 : 389,357.10 = 133,600.20 : x
  2. Step 2: Convert to fraction form
    259,571.40/389,357.10 = 133,600.20/x
  3. Step 3: Cross multiply
    259,571.40x = 389,357.10 × 133,600.20
  4. Step 4: Simplify right side
    259,571.40x = 52,018,186,431.42
  5. Step 5: Solve for x
    x = 52,018,186,431.42/259,571.40
  6. Step 6: Final answer
    x = 200,400.30

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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.