Home / 388,923-536,761.26-219,188.04

Finding the Fourth Proportional to 388,923, 536,761.26 and 219,188.04

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Solution

The fourth proportional to 388,923, 536,761.26 and 219,188.04 is: 302,506.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,923 : 536,761.26 = 219,188.04 : x
  2. Step 2: Convert to fraction form
    388,923/536,761.26 = 219,188.04/x
  3. Step 3: Cross multiply
    388,923x = 536,761.26 × 219,188.04
  4. Step 4: Simplify right side
    388,923x = 117,651,648,527.33
  5. Step 5: Solve for x
    x = 117,651,648,527.33/388,923
  6. Step 6: Final answer
    x = 302,506.28

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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.