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Finding the Fourth Proportional to 261,704.60, 392,556.90 and 219,714.20

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Solution

The fourth proportional to 261,704.60, 392,556.90 and 219,714.20 is: 329,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,704.60 : 392,556.90 = 219,714.20 : x
  2. Step 2: Convert to fraction form
    261,704.60/392,556.90 = 219,714.20/x
  3. Step 3: Cross multiply
    261,704.60x = 392,556.90 × 219,714.20
  4. Step 4: Simplify right side
    261,704.60x = 86,250,325,237.98
  5. Step 5: Solve for x
    x = 86,250,325,237.98/261,704.60
  6. Step 6: Final answer
    x = 329,571.30

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1.5x scale

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.