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Finding the Fourth Proportional to 485,558.88, 670,063.55 and 270,712.05

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Solution

The fourth proportional to 485,558.88, 670,063.55 and 270,712.05 is: 373,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,558.88 : 670,063.55 = 270,712.05 : x
  2. Step 2: Convert to fraction form
    485,558.88/670,063.55 = 270,712.05/x
  3. Step 3: Cross multiply
    485,558.88x = 670,063.55 × 270,712.05
  4. Step 4: Simplify right side
    485,558.88x = 181,394,277,250.78
  5. Step 5: Solve for x
    x = 181,394,277,250.78/485,558.88
  6. Step 6: Final answer
    x = 373,578.33

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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.