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Finding the Fourth Proportional to 236,172.54, 354,222.30 and 86,377.80

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Solution

The fourth proportional to 236,172.54, 354,222.30 and 86,377.80 is: 129,553.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,172.54 : 354,222.30 = 86,377.80 : x
  2. Step 2: Convert to fraction form
    236,172.54/354,222.30 = 86,377.80/x
  3. Step 3: Cross multiply
    236,172.54x = 354,222.30 × 86,377.80
  4. Step 4: Simplify right side
    236,172.54x = 30,596,942,984.94
  5. Step 5: Solve for x
    x = 30,596,942,984.94/236,172.54
  6. Step 6: Final answer
    x = 129,553.35

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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.