Home / 290,835.74-436,263.33-80,456.06

Finding the Fourth Proportional to 290,835.74, 436,263.33 and 80,456.06

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Solution

The fourth proportional to 290,835.74, 436,263.33 and 80,456.06 is: 120,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,835.74 : 436,263.33 = 80,456.06 : x
  2. Step 2: Convert to fraction form
    290,835.74/436,263.33 = 80,456.06/x
  3. Step 3: Cross multiply
    290,835.74x = 436,263.33 × 80,456.06
  4. Step 4: Simplify right side
    290,835.74x = 35,100,027,362.48
  5. Step 5: Solve for x
    x = 35,100,027,362.48/290,835.74
  6. Step 6: Final answer
    x = 120,686.78

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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.