Home / 290,021.67-435,014.96-172,441.26

Finding the Fourth Proportional to 290,021.67, 435,014.96 and 172,441.26

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Solution

The fourth proportional to 290,021.67, 435,014.96 and 172,441.26 is: 258,651.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,021.67 : 435,014.96 = 172,441.26 : x
  2. Step 2: Convert to fraction form
    290,021.67/435,014.96 = 172,441.26/x
  3. Step 3: Cross multiply
    290,021.67x = 435,014.96 × 172,441.26
  4. Step 4: Simplify right side
    290,021.67x = 75,014,526,959.04
  5. Step 5: Solve for x
    x = 75,014,526,959.04/290,021.67
  6. Step 6: Final answer
    x = 258,651.46

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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.