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Finding the Fourth Proportional to 486,047.28, 670,744.32 and 271,174.56

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Solution

The fourth proportional to 486,047.28, 670,744.32 and 271,174.56 is: 374,220.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,047.28 : 670,744.32 = 271,174.56 : x
  2. Step 2: Convert to fraction form
    486,047.28/670,744.32 = 271,174.56/x
  3. Step 3: Cross multiply
    486,047.28x = 670,744.32 × 271,174.56
  4. Step 4: Simplify right side
    486,047.28x = 181,888,795,848.50
  5. Step 5: Solve for x
    x = 181,888,795,848.50/486,047.28
  6. Step 6: Final answer
    x = 374,220.38

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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.