Home / 505,825.20-758,628.45-221,515.20

Finding the Fourth Proportional to 505,825.20, 758,628.45 and 221,515.20

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Solution

The fourth proportional to 505,825.20, 758,628.45 and 221,515.20 is: 332,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,825.20 : 758,628.45 = 221,515.20 : x
  2. Step 2: Convert to fraction form
    505,825.20/758,628.45 = 221,515.20/x
  3. Step 3: Cross multiply
    505,825.20x = 758,628.45 × 221,515.20
  4. Step 4: Simplify right side
    505,825.20x = 168,047,732,827.44
  5. Step 5: Solve for x
    x = 168,047,732,827.44/505,825.20
  6. Step 6: Final answer
    x = 332,224.91

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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.