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Finding the Fourth Proportional to 262,087.20, 392,936.40 and 112,204.80

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Solution

The fourth proportional to 262,087.20, 392,936.40 and 112,204.80 is: 168,223.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,087.20 : 392,936.40 = 112,204.80 : x
  2. Step 2: Convert to fraction form
    262,087.20/392,936.40 = 112,204.80/x
  3. Step 3: Cross multiply
    262,087.20x = 392,936.40 × 112,204.80
  4. Step 4: Simplify right side
    262,087.20x = 44,089,350,174.72
  5. Step 5: Solve for x
    x = 44,089,350,174.72/262,087.20
  6. Step 6: Final answer
    x = 168,223.97

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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.