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Finding the Fourth Proportional to 219,269, 328,955.50 and 71,525

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Solution

The fourth proportional to 219,269, 328,955.50 and 71,525 is: 107,304.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,269 : 328,955.50 = 71,525 : x
  2. Step 2: Convert to fraction form
    219,269/328,955.50 = 71,525/x
  3. Step 3: Cross multiply
    219,269x = 328,955.50 × 71,525
  4. Step 4: Simplify right side
    219,269x = 23,528,542,137.50
  5. Step 5: Solve for x
    x = 23,528,542,137.50/219,269
  6. Step 6: Final answer
    x = 107,304.46

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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.