Home / 398,579.46-598,153.50-221,228.34

Finding the Fourth Proportional to 398,579.46, 598,153.50 and 221,228.34

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Solution

The fourth proportional to 398,579.46, 598,153.50 and 221,228.34 is: 332,000.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,579.46 : 598,153.50 = 221,228.34 : x
  2. Step 2: Convert to fraction form
    398,579.46/598,153.50 = 221,228.34/x
  3. Step 3: Cross multiply
    398,579.46x = 598,153.50 × 221,228.34
  4. Step 4: Simplify right side
    398,579.46x = 132,328,505,870.19
  5. Step 5: Solve for x
    x = 132,328,505,870.19/398,579.46
  6. Step 6: Final answer
    x = 332,000.31

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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.