Home / 397,268.18-548,240.90-215,992.31

Finding the Fourth Proportional to 397,268.18, 548,240.90 and 215,992.31

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Solution

The fourth proportional to 397,268.18, 548,240.90 and 215,992.31 is: 298,075.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,268.18 : 548,240.90 = 215,992.31 : x
  2. Step 2: Convert to fraction form
    397,268.18/548,240.90 = 215,992.31/x
  3. Step 3: Cross multiply
    397,268.18x = 548,240.90 × 215,992.31
  4. Step 4: Simplify right side
    397,268.18x = 118,415,814,606.31
  5. Step 5: Solve for x
    x = 118,415,814,606.31/397,268.18
  6. Step 6: Final answer
    x = 298,075.26

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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.