Home / 290,837.06-436,265.30-80,457.38

Finding the Fourth Proportional to 290,837.06, 436,265.30 and 80,457.38

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Solution

The fourth proportional to 290,837.06, 436,265.30 and 80,457.38 is: 120,688.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,837.06 : 436,265.30 = 80,457.38 : x
  2. Step 2: Convert to fraction form
    290,837.06/436,265.30 = 80,457.38/x
  3. Step 3: Cross multiply
    290,837.06x = 436,265.30 × 80,457.38
  4. Step 4: Simplify right side
    290,837.06x = 35,100,763,022.91
  5. Step 5: Solve for x
    x = 35,100,763,022.91/290,837.06
  6. Step 6: Final answer
    x = 120,688.76

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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.