Home / 280,515.38-420,982.06-205,828.52

Finding the Fourth Proportional to 280,515.38, 420,982.06 and 205,828.52

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Solution

The fourth proportional to 280,515.38, 420,982.06 and 205,828.52 is: 308,896.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,515.38 : 420,982.06 = 205,828.52 : x
  2. Step 2: Convert to fraction form
    280,515.38/420,982.06 = 205,828.52/x
  3. Step 3: Cross multiply
    280,515.38x = 420,982.06 × 205,828.52
  4. Step 4: Simplify right side
    280,515.38x = 86,650,114,356.35
  5. Step 5: Solve for x
    x = 86,650,114,356.35/280,515.38
  6. Step 6: Final answer
    x = 308,896.13

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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.