Home / 260,222.03-390,334.26-80,305.24

Finding the Fourth Proportional to 260,222.03, 390,334.26 and 80,305.24

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Solution

The fourth proportional to 260,222.03, 390,334.26 and 80,305.24 is: 120,458.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,222.03 : 390,334.26 = 80,305.24 : x
  2. Step 2: Convert to fraction form
    260,222.03/390,334.26 = 80,305.24/x
  3. Step 3: Cross multiply
    260,222.03x = 390,334.26 × 80,305.24
  4. Step 4: Simplify right side
    260,222.03x = 31,345,884,477.85
  5. Step 5: Solve for x
    x = 31,345,884,477.85/260,222.03
  6. Step 6: Final answer
    x = 120,458.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.