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Finding the Fourth Proportional to 353,289.72, 529,940.70 and 100,576.80

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Solution

The fourth proportional to 353,289.72, 529,940.70 and 100,576.80 is: 150,866.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,289.72 : 529,940.70 = 100,576.80 : x
  2. Step 2: Convert to fraction form
    353,289.72/529,940.70 = 100,576.80/x
  3. Step 3: Cross multiply
    353,289.72x = 529,940.70 × 100,576.80
  4. Step 4: Simplify right side
    353,289.72x = 53,299,739,795.76
  5. Step 5: Solve for x
    x = 53,299,739,795.76/353,289.72
  6. Step 6: Final answer
    x = 150,866.94

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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.