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Finding the Fourth Proportional to 259,480.40, 389,512.20 and 200,577.20

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Solution

The fourth proportional to 259,480.40, 389,512.20 and 200,577.20 is: 301,091.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,480.40 : 389,512.20 = 200,577.20 : x
  2. Step 2: Convert to fraction form
    259,480.40/389,512.20 = 200,577.20/x
  3. Step 3: Cross multiply
    259,480.40x = 389,512.20 × 200,577.20
  4. Step 4: Simplify right side
    259,480.40x = 78,127,266,441.84
  5. Step 5: Solve for x
    x = 78,127,266,441.84/259,480.40
  6. Step 6: Final answer
    x = 301,091.21

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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.