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Finding the Fourth Proportional to 354,430.12, 489,114.39 and 201,469.33

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Solution

The fourth proportional to 354,430.12, 489,114.39 and 201,469.33 is: 278,028.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,430.12 : 489,114.39 = 201,469.33 : x
  2. Step 2: Convert to fraction form
    354,430.12/489,114.39 = 201,469.33/x
  3. Step 3: Cross multiply
    354,430.12x = 489,114.39 × 201,469.33
  4. Step 4: Simplify right side
    354,430.12x = 98,541,548,446.66
  5. Step 5: Solve for x
    x = 98,541,548,446.66/354,430.12
  6. Step 6: Final answer
    x = 278,028.14

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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.