Home / 420,563.70-580,370.45-239,271.73

Finding the Fourth Proportional to 420,563.70, 580,370.45 and 239,271.73

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Solution

The fourth proportional to 420,563.70, 580,370.45 and 239,271.73 is: 330,190.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,563.70 : 580,370.45 = 239,271.73 : x
  2. Step 2: Convert to fraction form
    420,563.70/580,370.45 = 239,271.73/x
  3. Step 3: Cross multiply
    420,563.70x = 580,370.45 × 239,271.73
  4. Step 4: Simplify right side
    420,563.70x = 138,866,238,965.09
  5. Step 5: Solve for x
    x = 138,866,238,965.09/420,563.70
  6. Step 6: Final answer
    x = 330,190.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.