Home / 279,739.03-419,668.35-90,210.19

Finding the Fourth Proportional to 279,739.03, 419,668.35 and 90,210.19

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Solution

The fourth proportional to 279,739.03, 419,668.35 and 90,210.19 is: 135,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,739.03 : 419,668.35 = 90,210.19 : x
  2. Step 2: Convert to fraction form
    279,739.03/419,668.35 = 90,210.19/x
  3. Step 3: Cross multiply
    279,739.03x = 419,668.35 × 90,210.19
  4. Step 4: Simplify right side
    279,739.03x = 37,858,361,590.49
  5. Step 5: Solve for x
    x = 37,858,361,590.49/279,739.03
  6. Step 6: Final answer
    x = 135,334.57

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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.