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Finding the Fourth Proportional to 219,650.94, 329,351.49 and 86,458.98

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Solution

The fourth proportional to 219,650.94, 329,351.49 and 86,458.98 is: 129,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,650.94 : 329,351.49 = 86,458.98 : x
  2. Step 2: Convert to fraction form
    219,650.94/329,351.49 = 86,458.98/x
  3. Step 3: Cross multiply
    219,650.94x = 329,351.49 × 86,458.98
  4. Step 4: Simplify right side
    219,650.94x = 28,475,393,886.88
  5. Step 5: Solve for x
    x = 28,475,393,886.88/219,650.94
  6. Step 6: Final answer
    x = 129,639.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.