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Finding the Fourth Proportional to 353,993.84, 488,033.86 and 342,986.48

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Solution

The fourth proportional to 353,993.84, 488,033.86 and 342,986.48 is: 472,858.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,993.84 : 488,033.86 = 342,986.48 : x
  2. Step 2: Convert to fraction form
    353,993.84/488,033.86 = 342,986.48/x
  3. Step 3: Cross multiply
    353,993.84x = 488,033.86 × 342,986.48
  4. Step 4: Simplify right side
    353,993.84x = 167,389,015,762.21
  5. Step 5: Solve for x
    x = 167,389,015,762.21/353,993.84
  6. Step 6: Final answer
    x = 472,858.56

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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.