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Finding the Fourth Proportional to 353,660.48, 488,051.12 and 192,515.28

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Solution

The fourth proportional to 353,660.48, 488,051.12 and 192,515.28 is: 265,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,660.48 : 488,051.12 = 192,515.28 : x
  2. Step 2: Convert to fraction form
    353,660.48/488,051.12 = 192,515.28/x
  3. Step 3: Cross multiply
    353,660.48x = 488,051.12 × 192,515.28
  4. Step 4: Simplify right side
    353,660.48x = 93,957,298,021.11
  5. Step 5: Solve for x
    x = 93,957,298,021.11/353,660.48
  6. Step 6: Final answer
    x = 265,670.90

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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.