Home / 380,556.45-525,185.21-210,790.57

Finding the Fourth Proportional to 380,556.45, 525,185.21 and 210,790.57

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Solution

The fourth proportional to 380,556.45, 525,185.21 and 210,790.57 is: 290,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,556.45 : 525,185.21 = 210,790.57 : x
  2. Step 2: Convert to fraction form
    380,556.45/525,185.21 = 210,790.57/x
  3. Step 3: Cross multiply
    380,556.45x = 525,185.21 × 210,790.57
  4. Step 4: Simplify right side
    380,556.45x = 110,704,089,771.47
  5. Step 5: Solve for x
    x = 110,704,089,771.47/380,556.45
  6. Step 6: Final answer
    x = 290,900.57

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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.