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Finding the Fourth Proportional to 219,325.40, 328,550.70 and 125,721.80

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Solution

The fourth proportional to 219,325.40, 328,550.70 and 125,721.80 is: 188,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,325.40 : 328,550.70 = 125,721.80 : x
  2. Step 2: Convert to fraction form
    219,325.40/328,550.70 = 125,721.80/x
  3. Step 3: Cross multiply
    219,325.40x = 328,550.70 × 125,721.80
  4. Step 4: Simplify right side
    219,325.40x = 41,305,985,395.26
  5. Step 5: Solve for x
    x = 41,305,985,395.26/219,325.40
  6. Step 6: Final answer
    x = 188,331.97

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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.