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Finding the Fourth Proportional to 353,928.74, 488,429.13 and 192,783.39

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Solution

The fourth proportional to 353,928.74, 488,429.13 and 192,783.39 is: 266,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,928.74 : 488,429.13 = 192,783.39 : x
  2. Step 2: Convert to fraction form
    353,928.74/488,429.13 = 192,783.39/x
  3. Step 3: Cross multiply
    353,928.74x = 488,429.13 × 192,783.39
  4. Step 4: Simplify right side
    353,928.74x = 94,161,023,456.15
  5. Step 5: Solve for x
    x = 94,161,023,456.15/353,928.74
  6. Step 6: Final answer
    x = 266,045.15

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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.