Home / 397,109.06-548,014.73-215,821

Finding the Fourth Proportional to 397,109.06, 548,014.73 and 215,821

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Solution

The fourth proportional to 397,109.06, 548,014.73 and 215,821 is: 297,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,109.06 : 548,014.73 = 215,821 : x
  2. Step 2: Convert to fraction form
    397,109.06/548,014.73 = 215,821/x
  3. Step 3: Cross multiply
    397,109.06x = 548,014.73 × 215,821
  4. Step 4: Simplify right side
    397,109.06x = 118,273,087,043.33
  5. Step 5: Solve for x
    x = 118,273,087,043.33/397,109.06
  6. Step 6: Final answer
    x = 297,835.28

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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.