Home / 259,933.40-389,900.10-135,258.20

Finding the Fourth Proportional to 259,933.40, 389,900.10 and 135,258.20

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Solution

The fourth proportional to 259,933.40, 389,900.10 and 135,258.20 is: 202,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,933.40 : 389,900.10 = 135,258.20 : x
  2. Step 2: Convert to fraction form
    259,933.40/389,900.10 = 135,258.20/x
  3. Step 3: Cross multiply
    259,933.40x = 389,900.10 × 135,258.20
  4. Step 4: Simplify right side
    259,933.40x = 52,737,185,705.82
  5. Step 5: Solve for x
    x = 52,737,185,705.82/259,933.40
  6. Step 6: Final answer
    x = 202,887.30

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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.