Home / 259,942.80-389,914.20-126,908.40

Finding the Fourth Proportional to 259,942.80, 389,914.20 and 126,908.40

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Solution

The fourth proportional to 259,942.80, 389,914.20 and 126,908.40 is: 190,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,942.80 : 389,914.20 = 126,908.40 : x
  2. Step 2: Convert to fraction form
    259,942.80/389,914.20 = 126,908.40/x
  3. Step 3: Cross multiply
    259,942.80x = 389,914.20 × 126,908.40
  4. Step 4: Simplify right side
    259,942.80x = 49,483,387,259.28
  5. Step 5: Solve for x
    x = 49,483,387,259.28/259,942.80
  6. Step 6: Final answer
    x = 190,362.60

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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.