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Finding the Fourth Proportional to 353,642.70, 488,039.85 and 192,489.96

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Solution

The fourth proportional to 353,642.70, 488,039.85 and 192,489.96 is: 265,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,642.70 : 488,039.85 = 192,489.96 : x
  2. Step 2: Convert to fraction form
    353,642.70/488,039.85 = 192,489.96/x
  3. Step 3: Cross multiply
    353,642.70x = 488,039.85 × 192,489.96
  4. Step 4: Simplify right side
    353,642.70x = 93,942,771,204.91
  5. Step 5: Solve for x
    x = 93,942,771,204.91/353,642.70
  6. Step 6: Final answer
    x = 265,643.18

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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.