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Finding the Fourth Proportional to 547,243.60, 820,865.40 and 173,266.60

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Solution

The fourth proportional to 547,243.60, 820,865.40 and 173,266.60 is: 259,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,243.60 : 820,865.40 = 173,266.60 : x
  2. Step 2: Convert to fraction form
    547,243.60/820,865.40 = 173,266.60/x
  3. Step 3: Cross multiply
    547,243.60x = 820,865.40 × 173,266.60
  4. Step 4: Simplify right side
    547,243.60x = 142,228,556,915.64
  5. Step 5: Solve for x
    x = 142,228,556,915.64/547,243.60
  6. Step 6: Final answer
    x = 259,899.90

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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.