Home / 810,010.20-1,215,015.30-248,971.80

Finding the Fourth Proportional to 810,010.20, 1,215,015.30 and 248,971.80

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Solution

The fourth proportional to 810,010.20, 1,215,015.30 and 248,971.80 is: 373,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,010.20 : 1,215,015.30 = 248,971.80 : x
  2. Step 2: Convert to fraction form
    810,010.20/1,215,015.30 = 248,971.80/x
  3. Step 3: Cross multiply
    810,010.20x = 1,215,015.30 × 248,971.80
  4. Step 4: Simplify right side
    810,010.20x = 302,504,546,268.54
  5. Step 5: Solve for x
    x = 302,504,546,268.54/810,010.20
  6. Step 6: Final answer
    x = 373,457.70

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Double scale
Find fourth proportional to 810,011.20, 1,215,016.80 and 248,972.80
Similar ratio
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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.