Home / 290,985.12-401,668.20-190,383.12

Finding the Fourth Proportional to 290,985.12, 401,668.20 and 190,383.12

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Solution

The fourth proportional to 290,985.12, 401,668.20 and 190,383.12 is: 262,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,985.12 : 401,668.20 = 190,383.12 : x
  2. Step 2: Convert to fraction form
    290,985.12/401,668.20 = 190,383.12/x
  3. Step 3: Cross multiply
    290,985.12x = 401,668.20 × 190,383.12
  4. Step 4: Simplify right side
    290,985.12x = 76,470,845,120.78
  5. Step 5: Solve for x
    x = 76,470,845,120.78/290,985.12
  6. Step 6: Final answer
    x = 262,799.85

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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.