Home / 290,835.24-436,262.58-80,455.56

Finding the Fourth Proportional to 290,835.24, 436,262.58 and 80,455.56

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Solution

The fourth proportional to 290,835.24, 436,262.58 and 80,455.56 is: 120,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,835.24 : 436,262.58 = 80,455.56 : x
  2. Step 2: Convert to fraction form
    290,835.24/436,262.58 = 80,455.56/x
  3. Step 3: Cross multiply
    290,835.24x = 436,262.58 × 80,455.56
  4. Step 4: Simplify right side
    290,835.24x = 35,099,748,788.58
  5. Step 5: Solve for x
    x = 35,099,748,788.58/290,835.24
  6. Step 6: Final answer
    x = 120,686.03

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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.