Home / 290,719.24-436,078.87-91,055.26

Finding the Fourth Proportional to 290,719.24, 436,078.87 and 91,055.26

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Solution

The fourth proportional to 290,719.24, 436,078.87 and 91,055.26 is: 136,582.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,719.24 : 436,078.87 = 91,055.26 : x
  2. Step 2: Convert to fraction form
    290,719.24/436,078.87 = 91,055.26/x
  3. Step 3: Cross multiply
    290,719.24x = 436,078.87 × 91,055.26
  4. Step 4: Simplify right side
    290,719.24x = 39,707,274,888.36
  5. Step 5: Solve for x
    x = 39,707,274,888.36/290,719.24
  6. Step 6: Final answer
    x = 136,582.89

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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.