Home / 398,548.22-598,173.24-209,143.86

Finding the Fourth Proportional to 398,548.22, 598,173.24 and 209,143.86

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Solution

The fourth proportional to 398,548.22, 598,173.24 and 209,143.86 is: 313,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,548.22 : 598,173.24 = 209,143.86 : x
  2. Step 2: Convert to fraction form
    398,548.22/598,173.24 = 209,143.86/x
  3. Step 3: Cross multiply
    398,548.22x = 598,173.24 × 209,143.86
  4. Step 4: Simplify right side
    398,548.22x = 125,104,260,362.31
  5. Step 5: Solve for x
    x = 125,104,260,362.31/398,548.22
  6. Step 6: Final answer
    x = 313,899.94

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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.