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Finding the Fourth Proportional to 383,011.20, 574,516.80 and 102,556.80

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Solution

The fourth proportional to 383,011.20, 574,516.80 and 102,556.80 is: 153,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,011.20 : 574,516.80 = 102,556.80 : x
  2. Step 2: Convert to fraction form
    383,011.20/574,516.80 = 102,556.80/x
  3. Step 3: Cross multiply
    383,011.20x = 574,516.80 × 102,556.80
  4. Step 4: Simplify right side
    383,011.20x = 58,920,604,554.24
  5. Step 5: Solve for x
    x = 58,920,604,554.24/383,011.20
  6. Step 6: Final answer
    x = 153,835.20

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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.