Home / 259,801.20-389,604.60-91,256.40

Finding the Fourth Proportional to 259,801.20, 389,604.60 and 91,256.40

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Solution

The fourth proportional to 259,801.20, 389,604.60 and 91,256.40 is: 136,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,801.20 : 389,604.60 = 91,256.40 : x
  2. Step 2: Convert to fraction form
    259,801.20/389,604.60 = 91,256.40/x
  3. Step 3: Cross multiply
    259,801.20x = 389,604.60 × 91,256.40
  4. Step 4: Simplify right side
    259,801.20x = 35,553,913,219.44
  5. Step 5: Solve for x
    x = 35,553,913,219.44/259,801.20
  6. Step 6: Final answer
    x = 136,850.46

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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.