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Finding the Fourth Proportional to 354,564.49, 489,300.60 and 193,419.04

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Solution

The fourth proportional to 354,564.49, 489,300.60 and 193,419.04 is: 266,919.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,564.49 : 489,300.60 = 193,419.04 : x
  2. Step 2: Convert to fraction form
    354,564.49/489,300.60 = 193,419.04/x
  3. Step 3: Cross multiply
    354,564.49x = 489,300.60 × 193,419.04
  4. Step 4: Simplify right side
    354,564.49x = 94,640,052,323.42
  5. Step 5: Solve for x
    x = 94,640,052,323.42/354,564.49
  6. Step 6: Final answer
    x = 266,919.15

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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.