Home / 260,998.20-391,497.30-210,259.80

Finding the Fourth Proportional to 260,998.20, 391,497.30 and 210,259.80

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Solution

The fourth proportional to 260,998.20, 391,497.30 and 210,259.80 is: 315,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,998.20 : 391,497.30 = 210,259.80 : x
  2. Step 2: Convert to fraction form
    260,998.20/391,497.30 = 210,259.80/x
  3. Step 3: Cross multiply
    260,998.20x = 391,497.30 × 210,259.80
  4. Step 4: Simplify right side
    260,998.20x = 82,316,143,998.54
  5. Step 5: Solve for x
    x = 82,316,143,998.54/260,998.20
  6. Step 6: Final answer
    x = 315,389.70

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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.