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Finding the Fourth Proportional to 354,138.28, 488,696.60 and 192,989.86

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Solution

The fourth proportional to 354,138.28, 488,696.60 and 192,989.86 is: 266,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,138.28 : 488,696.60 = 192,989.86 : x
  2. Step 2: Convert to fraction form
    354,138.28/488,696.60 = 192,989.86/x
  3. Step 3: Cross multiply
    354,138.28x = 488,696.60 × 192,989.86
  4. Step 4: Simplify right side
    354,138.28x = 94,313,487,677.21
  5. Step 5: Solve for x
    x = 94,313,487,677.21/354,138.28
  6. Step 6: Final answer
    x = 266,318.25

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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.