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Finding the Fourth Proportional to 354,128.06, 488,684.31 and 192,979.82

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Solution

The fourth proportional to 354,128.06, 488,684.31 and 192,979.82 is: 266,305.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,128.06 : 488,684.31 = 192,979.82 : x
  2. Step 2: Convert to fraction form
    354,128.06/488,684.31 = 192,979.82/x
  3. Step 3: Cross multiply
    354,128.06x = 488,684.31 × 192,979.82
  4. Step 4: Simplify right side
    354,128.06x = 94,306,210,180.62
  5. Step 5: Solve for x
    x = 94,306,210,180.62/354,128.06
  6. Step 6: Final answer
    x = 266,305.39

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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.