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Finding the Fourth Proportional to 486,206.79, 670,999.05 and 271,388.85

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Solution

The fourth proportional to 486,206.79, 670,999.05 and 271,388.85 is: 374,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,206.79 : 670,999.05 = 271,388.85 : x
  2. Step 2: Convert to fraction form
    486,206.79/670,999.05 = 271,388.85/x
  3. Step 3: Cross multiply
    486,206.79x = 670,999.05 × 271,388.85
  4. Step 4: Simplify right side
    486,206.79x = 182,101,660,530.59
  5. Step 5: Solve for x
    x = 182,101,660,530.59/486,206.79
  6. Step 6: Final answer
    x = 374,535.41

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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.