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Finding the Fourth Proportional to 228,664.44, 342,622.46 and 138,433.66

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Solution

The fourth proportional to 228,664.44, 342,622.46 and 138,433.66 is: 207,423.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,664.44 : 342,622.46 = 138,433.66 : x
  2. Step 2: Convert to fraction form
    228,664.44/342,622.46 = 138,433.66/x
  3. Step 3: Cross multiply
    228,664.44x = 342,622.46 × 138,433.66
  4. Step 4: Simplify right side
    228,664.44x = 47,430,481,136.00
  5. Step 5: Solve for x
    x = 47,430,481,136.00/228,664.44
  6. Step 6: Final answer
    x = 207,423.95

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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.