Home / 357,321.26-493,334.07-221,499.66

Finding the Fourth Proportional to 357,321.26, 493,334.07 and 221,499.66

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Solution

The fourth proportional to 357,321.26, 493,334.07 and 221,499.66 is: 305,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,321.26 : 493,334.07 = 221,499.66 : x
  2. Step 2: Convert to fraction form
    357,321.26/493,334.07 = 221,499.66/x
  3. Step 3: Cross multiply
    357,321.26x = 493,334.07 × 221,499.66
  4. Step 4: Simplify right side
    357,321.26x = 109,273,328,771.42
  5. Step 5: Solve for x
    x = 109,273,328,771.42/357,321.26
  6. Step 6: Final answer
    x = 305,812.56

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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.