Home / 325,829.20-489,181.20-208,022.80

Finding the Fourth Proportional to 325,829.20, 489,181.20 and 208,022.80

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Solution

The fourth proportional to 325,829.20, 489,181.20 and 208,022.80 is: 312,313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,829.20 : 489,181.20 = 208,022.80 : x
  2. Step 2: Convert to fraction form
    325,829.20/489,181.20 = 208,022.80/x
  3. Step 3: Cross multiply
    325,829.20x = 489,181.20 × 208,022.80
  4. Step 4: Simplify right side
    325,829.20x = 101,760,842,931.36
  5. Step 5: Solve for x
    x = 101,760,842,931.36/325,829.20
  6. Step 6: Final answer
    x = 312,313.45

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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.