Home / 397,231.32-548,156.46-215,941.78

Finding the Fourth Proportional to 397,231.32, 548,156.46 and 215,941.78

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Solution

The fourth proportional to 397,231.32, 548,156.46 and 215,941.78 is: 297,987.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,231.32 : 548,156.46 = 215,941.78 : x
  2. Step 2: Convert to fraction form
    397,231.32/548,156.46 = 215,941.78/x
  3. Step 3: Cross multiply
    397,231.32x = 548,156.46 × 215,941.78
  4. Step 4: Simplify right side
    397,231.32x = 118,369,883,185.88
  5. Step 5: Solve for x
    x = 118,369,883,185.88/397,231.32
  6. Step 6: Final answer
    x = 297,987.28

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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.