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Finding the Fourth Proportional to 219,969.50, 329,954.25 and 79,728.26

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Solution

The fourth proportional to 219,969.50, 329,954.25 and 79,728.26 is: 119,592.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,969.50 : 329,954.25 = 79,728.26 : x
  2. Step 2: Convert to fraction form
    219,969.50/329,954.25 = 79,728.26/x
  3. Step 3: Cross multiply
    219,969.50x = 329,954.25 × 79,728.26
  4. Step 4: Simplify right side
    219,969.50x = 26,306,678,232.11
  5. Step 5: Solve for x
    x = 26,306,678,232.11/219,969.50
  6. Step 6: Final answer
    x = 119,592.39

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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.