Home / 290,839.04-436,268.28-80,459.36

Finding the Fourth Proportional to 290,839.04, 436,268.28 and 80,459.36

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Solution

The fourth proportional to 290,839.04, 436,268.28 and 80,459.36 is: 120,691.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,839.04 : 436,268.28 = 80,459.36 : x
  2. Step 2: Convert to fraction form
    290,839.04/436,268.28 = 80,459.36/x
  3. Step 3: Cross multiply
    290,839.04x = 436,268.28 × 80,459.36
  4. Step 4: Simplify right side
    290,839.04x = 35,101,866,597.10
  5. Step 5: Solve for x
    x = 35,101,866,597.10/290,839.04
  6. Step 6: Final answer
    x = 120,691.73

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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.