Home / 290,837.64-436,266.19-80,457.96

Finding the Fourth Proportional to 290,837.64, 436,266.19 and 80,457.96

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Solution

The fourth proportional to 290,837.64, 436,266.19 and 80,457.96 is: 120,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,837.64 : 436,266.19 = 80,457.96 : x
  2. Step 2: Convert to fraction form
    290,837.64/436,266.19 = 80,457.96/x
  3. Step 3: Cross multiply
    290,837.64x = 436,266.19 × 80,457.96
  4. Step 4: Simplify right side
    290,837.64x = 35,101,087,664.37
  5. Step 5: Solve for x
    x = 35,101,087,664.37/290,837.64
  6. Step 6: Final answer
    x = 120,689.63

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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.