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Finding the Fourth Proportional to 339,970.60, 469,159.90 and 189,067.60

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Solution

The fourth proportional to 339,970.60, 469,159.90 and 189,067.60 is: 260,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,970.60 : 469,159.90 = 189,067.60 : x
  2. Step 2: Convert to fraction form
    339,970.60/469,159.90 = 189,067.60/x
  3. Step 3: Cross multiply
    339,970.60x = 469,159.90 × 189,067.60
  4. Step 4: Simplify right side
    339,970.60x = 88,702,936,309.24
  5. Step 5: Solve for x
    x = 88,702,936,309.24/339,970.60
  6. Step 6: Final answer
    x = 260,913.55

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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.