Home / 309,724.22-426,967.01-218,919.98

Finding the Fourth Proportional to 309,724.22, 426,967.01 and 218,919.98

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Solution

The fourth proportional to 309,724.22, 426,967.01 and 218,919.98 is: 301,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,724.22 : 426,967.01 = 218,919.98 : x
  2. Step 2: Convert to fraction form
    309,724.22/426,967.01 = 218,919.98/x
  3. Step 3: Cross multiply
    309,724.22x = 426,967.01 × 218,919.98
  4. Step 4: Simplify right side
    309,724.22x = 93,471,609,289.86
  5. Step 5: Solve for x
    x = 93,471,609,289.86/309,724.22
  6. Step 6: Final answer
    x = 301,789.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.