Home / 259,945.60-389,918.40-158,906.20

Finding the Fourth Proportional to 259,945.60, 389,918.40 and 158,906.20

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Solution

The fourth proportional to 259,945.60, 389,918.40 and 158,906.20 is: 238,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,945.60 : 389,918.40 = 158,906.20 : x
  2. Step 2: Convert to fraction form
    259,945.60/389,918.40 = 158,906.20/x
  3. Step 3: Cross multiply
    259,945.60x = 389,918.40 × 158,906.20
  4. Step 4: Simplify right side
    259,945.60x = 61,960,451,254.08
  5. Step 5: Solve for x
    x = 61,960,451,254.08/259,945.60
  6. Step 6: Final answer
    x = 238,359.30

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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.