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Finding the Fourth Proportional to 354,119.80, 488,685.34 and 192,974.80

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Solution

The fourth proportional to 354,119.80, 488,685.34 and 192,974.80 is: 266,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,119.80 : 488,685.34 = 192,974.80 : x
  2. Step 2: Convert to fraction form
    354,119.80/488,685.34 = 192,974.80/x
  3. Step 3: Cross multiply
    354,119.80x = 488,685.34 × 192,974.80
  4. Step 4: Simplify right side
    354,119.80x = 94,303,955,749.43
  5. Step 5: Solve for x
    x = 94,303,955,749.43/354,119.80
  6. Step 6: Final answer
    x = 266,305.23

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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.