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Finding the Fourth Proportional to 347,310.40, 519,583.20 and 301,076.80

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Solution

The fourth proportional to 347,310.40, 519,583.20 and 301,076.80 is: 450,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,310.40 : 519,583.20 = 301,076.80 : x
  2. Step 2: Convert to fraction form
    347,310.40/519,583.20 = 301,076.80/x
  3. Step 3: Cross multiply
    347,310.40x = 519,583.20 × 301,076.80
  4. Step 4: Simplify right side
    347,310.40x = 156,434,447,189.76
  5. Step 5: Solve for x
    x = 156,434,447,189.76/347,310.40
  6. Step 6: Final answer
    x = 450,416.82

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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.