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Finding the Fourth Proportional to 219,418.50, 329,128.83 and 53,206.50

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Solution

The fourth proportional to 219,418.50, 329,128.83 and 53,206.50 is: 79,810.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,418.50 : 329,128.83 = 53,206.50 : x
  2. Step 2: Convert to fraction form
    219,418.50/329,128.83 = 53,206.50/x
  3. Step 3: Cross multiply
    219,418.50x = 329,128.83 × 53,206.50
  4. Step 4: Simplify right side
    219,418.50x = 17,511,793,093.40
  5. Step 5: Solve for x
    x = 17,511,793,093.40/219,418.50
  6. Step 6: Final answer
    x = 79,810.01

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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.