Home / 259,887.30-389,870.19-110,128.20

Finding the Fourth Proportional to 259,887.30, 389,870.19 and 110,128.20

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Solution

The fourth proportional to 259,887.30, 389,870.19 and 110,128.20 is: 165,208.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,887.30 : 389,870.19 = 110,128.20 : x
  2. Step 2: Convert to fraction form
    259,887.30/389,870.19 = 110,128.20/x
  3. Step 3: Cross multiply
    259,887.30x = 389,870.19 × 110,128.20
  4. Step 4: Simplify right side
    259,887.30x = 42,935,702,258.36
  5. Step 5: Solve for x
    x = 42,935,702,258.36/259,887.30
  6. Step 6: Final answer
    x = 165,208.93

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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.