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Finding the Fourth Proportional to 354,115.80, 488,679.82 and 192,970.80

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Solution

The fourth proportional to 354,115.80, 488,679.82 and 192,970.80 is: 266,299.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,115.80 : 488,679.82 = 192,970.80 : x
  2. Step 2: Convert to fraction form
    354,115.80/488,679.82 = 192,970.80/x
  3. Step 3: Cross multiply
    354,115.80x = 488,679.82 × 192,970.80
  4. Step 4: Simplify right side
    354,115.80x = 94,300,935,809.26
  5. Step 5: Solve for x
    x = 94,300,935,809.26/354,115.80
  6. Step 6: Final answer
    x = 266,299.71

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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.