Home / 287,986.60-431,629.68-203,771.03

Finding the Fourth Proportional to 287,986.60, 431,629.68 and 203,771.03

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Solution

The fourth proportional to 287,986.60, 431,629.68 and 203,771.03 is: 305,408.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,986.60 : 431,629.68 = 203,771.03 : x
  2. Step 2: Convert to fraction form
    287,986.60/431,629.68 = 203,771.03/x
  3. Step 3: Cross multiply
    287,986.60x = 431,629.68 × 203,771.03
  4. Step 4: Simplify right side
    287,986.60x = 87,953,624,472.17
  5. Step 5: Solve for x
    x = 87,953,624,472.17/287,986.60
  6. Step 6: Final answer
    x = 305,408.74

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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.