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Finding the Fourth Proportional to 343,881.64, 474,556.90 and 192,978.60

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Solution

The fourth proportional to 343,881.64, 474,556.90 and 192,978.60 is: 266,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,881.64 : 474,556.90 = 192,978.60 : x
  2. Step 2: Convert to fraction form
    343,881.64/474,556.90 = 192,978.60/x
  3. Step 3: Cross multiply
    343,881.64x = 474,556.90 × 192,978.60
  4. Step 4: Simplify right side
    343,881.64x = 91,579,326,182.34
  5. Step 5: Solve for x
    x = 91,579,326,182.34/343,881.64
  6. Step 6: Final answer
    x = 266,310.60

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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.