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Finding the Fourth Proportional to 347,714.40, 521,571.60 and 331,384.80

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Solution

The fourth proportional to 347,714.40, 521,571.60 and 331,384.80 is: 497,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,714.40 : 521,571.60 = 331,384.80 : x
  2. Step 2: Convert to fraction form
    347,714.40/521,571.60 = 331,384.80/x
  3. Step 3: Cross multiply
    347,714.40x = 521,571.60 × 331,384.80
  4. Step 4: Simplify right side
    347,714.40x = 172,840,900,351.68
  5. Step 5: Solve for x
    x = 172,840,900,351.68/347,714.40
  6. Step 6: Final answer
    x = 497,077.20

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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.