Home / 210,065.20-315,328.20-131,268.40

Finding the Fourth Proportional to 210,065.20, 315,328.20 and 131,268.40

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Solution

The fourth proportional to 210,065.20, 315,328.20 and 131,268.40 is: 197,046.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,065.20 : 315,328.20 = 131,268.40 : x
  2. Step 2: Convert to fraction form
    210,065.20/315,328.20 = 131,268.40/x
  3. Step 3: Cross multiply
    210,065.20x = 315,328.20 × 131,268.40
  4. Step 4: Simplify right side
    210,065.20x = 41,392,628,288.88
  5. Step 5: Solve for x
    x = 41,392,628,288.88/210,065.20
  6. Step 6: Final answer
    x = 197,046.58

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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.