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Finding the Fourth Proportional to 354,561.22, 489,373.38 and 225,473.53

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Solution

The fourth proportional to 354,561.22, 489,373.38 and 225,473.53 is: 311,203.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,561.22 : 489,373.38 = 225,473.53 : x
  2. Step 2: Convert to fraction form
    354,561.22/489,373.38 = 225,473.53/x
  3. Step 3: Cross multiply
    354,561.22x = 489,373.38 × 225,473.53
  4. Step 4: Simplify right side
    354,561.22x = 110,340,743,476.63
  5. Step 5: Solve for x
    x = 110,340,743,476.63/354,561.22
  6. Step 6: Final answer
    x = 311,203.64

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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.