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Finding the Fourth Proportional to 253,109.40, 379,664.10 and 251,359.80

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Solution

The fourth proportional to 253,109.40, 379,664.10 and 251,359.80 is: 377,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,109.40 : 379,664.10 = 251,359.80 : x
  2. Step 2: Convert to fraction form
    253,109.40/379,664.10 = 251,359.80/x
  3. Step 3: Cross multiply
    253,109.40x = 379,664.10 × 251,359.80
  4. Step 4: Simplify right side
    253,109.40x = 95,432,292,243.18
  5. Step 5: Solve for x
    x = 95,432,292,243.18/253,109.40
  6. Step 6: Final answer
    x = 377,039.70

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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.