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Finding the Fourth Proportional to 275,316.84, 379,939.86 and 154,460.70

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Solution

The fourth proportional to 275,316.84, 379,939.86 and 154,460.70 is: 213,157.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,316.84 : 379,939.86 = 154,460.70 : x
  2. Step 2: Convert to fraction form
    275,316.84/379,939.86 = 154,460.70/x
  3. Step 3: Cross multiply
    275,316.84x = 379,939.86 × 154,460.70
  4. Step 4: Simplify right side
    275,316.84x = 58,685,776,733.50
  5. Step 5: Solve for x
    x = 58,685,776,733.50/275,316.84
  6. Step 6: Final answer
    x = 213,157.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.