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Finding the Fourth Proportional to 486,858.96, 671,879.07 and 272,022.66

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Solution

The fourth proportional to 486,858.96, 671,879.07 and 272,022.66 is: 375,398.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,858.96 : 671,879.07 = 272,022.66 : x
  2. Step 2: Convert to fraction form
    486,858.96/671,879.07 = 272,022.66/x
  3. Step 3: Cross multiply
    486,858.96x = 671,879.07 × 272,022.66
  4. Step 4: Simplify right side
    486,858.96x = 182,766,331,819.73
  5. Step 5: Solve for x
    x = 182,766,331,819.73/486,858.96
  6. Step 6: Final answer
    x = 375,398.93

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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.