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Finding the Fourth Proportional to 252,697.76, 379,047.87 and 102,939.49

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Solution

The fourth proportional to 252,697.76, 379,047.87 and 102,939.49 is: 154,409.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,697.76 : 379,047.87 = 102,939.49 : x
  2. Step 2: Convert to fraction form
    252,697.76/379,047.87 = 102,939.49/x
  3. Step 3: Cross multiply
    252,697.76x = 379,047.87 × 102,939.49
  4. Step 4: Simplify right side
    252,697.76x = 39,018,994,423.39
  5. Step 5: Solve for x
    x = 39,018,994,423.39/252,697.76
  6. Step 6: Final answer
    x = 154,409.74

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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.