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Finding the Fourth Proportional to 339,884.32, 469,037.52 and 188,980

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Solution

The fourth proportional to 339,884.32, 469,037.52 and 188,980 is: 260,790.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,884.32 : 469,037.52 = 188,980 : x
  2. Step 2: Convert to fraction form
    339,884.32/469,037.52 = 188,980/x
  3. Step 3: Cross multiply
    339,884.32x = 469,037.52 × 188,980
  4. Step 4: Simplify right side
    339,884.32x = 88,638,710,529.60
  5. Step 5: Solve for x
    x = 88,638,710,529.60/339,884.32
  6. Step 6: Final answer
    x = 260,790.82

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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.