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Finding the Fourth Proportional to 354,585, 489,327.30 and 227,260.60

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Solution

The fourth proportional to 354,585, 489,327.30 and 227,260.60 is: 313,619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,585 : 489,327.30 = 227,260.60 : x
  2. Step 2: Convert to fraction form
    354,585/489,327.30 = 227,260.60/x
  3. Step 3: Cross multiply
    354,585x = 489,327.30 × 227,260.60
  4. Step 4: Simplify right side
    354,585x = 111,204,814,571.06
  5. Step 5: Solve for x
    x = 111,204,814,571.06/354,585
  6. Step 6: Final answer
    x = 313,619.62

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1.5x scale

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.