Home / 219,137.65-328,664.97-76,949.52

Finding the Fourth Proportional to 219,137.65, 328,664.97 and 76,949.52

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Solution

The fourth proportional to 219,137.65, 328,664.97 and 76,949.52 is: 115,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,137.65 : 328,664.97 = 76,949.52 : x
  2. Step 2: Convert to fraction form
    219,137.65/328,664.97 = 76,949.52/x
  3. Step 3: Cross multiply
    219,137.65x = 328,664.97 × 76,949.52
  4. Step 4: Simplify right side
    219,137.65x = 25,290,611,157.77
  5. Step 5: Solve for x
    x = 25,290,611,157.77/219,137.65
  6. Step 6: Final answer
    x = 115,409.70

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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.