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Finding the Fourth Proportional to 353,928.86, 488,429.28 and 192,783.50

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Solution

The fourth proportional to 353,928.86, 488,429.28 and 192,783.50 is: 266,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,928.86 : 488,429.28 = 192,783.50 : x
  2. Step 2: Convert to fraction form
    353,928.86/488,429.28 = 192,783.50/x
  3. Step 3: Cross multiply
    353,928.86x = 488,429.28 × 192,783.50
  4. Step 4: Simplify right side
    353,928.86x = 94,161,106,100.88
  5. Step 5: Solve for x
    x = 94,161,106,100.88/353,928.86
  6. Step 6: Final answer
    x = 266,045.29

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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.