Home / 259,327.40-388,962.30-212,498.60

Finding the Fourth Proportional to 259,327.40, 388,962.30 and 212,498.60

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Solution

The fourth proportional to 259,327.40, 388,962.30 and 212,498.60 is: 318,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,327.40 : 388,962.30 = 212,498.60 : x
  2. Step 2: Convert to fraction form
    259,327.40/388,962.30 = 212,498.60/x
  3. Step 3: Cross multiply
    259,327.40x = 388,962.30 × 212,498.60
  4. Step 4: Simplify right side
    259,327.40x = 82,653,944,202.78
  5. Step 5: Solve for x
    x = 82,653,944,202.78/259,327.40
  6. Step 6: Final answer
    x = 318,724.30

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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.