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Finding the Fourth Proportional to 275,173.68, 379,762.68 and 154,313.04

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Solution

The fourth proportional to 275,173.68, 379,762.68 and 154,313.04 is: 212,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,173.68 : 379,762.68 = 154,313.04 : x
  2. Step 2: Convert to fraction form
    275,173.68/379,762.68 = 154,313.04/x
  3. Step 3: Cross multiply
    275,173.68x = 379,762.68 × 154,313.04
  4. Step 4: Simplify right side
    275,173.68x = 58,602,333,629.35
  5. Step 5: Solve for x
    x = 58,602,333,629.35/275,173.68
  6. Step 6: Final answer
    x = 212,964.89

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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.