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Finding the Fourth Proportional to 386,471.63, 579,435.82 and 170,227.74

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Solution

The fourth proportional to 386,471.63, 579,435.82 and 170,227.74 is: 255,221.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,471.63 : 579,435.82 = 170,227.74 : x
  2. Step 2: Convert to fraction form
    386,471.63/579,435.82 = 170,227.74/x
  3. Step 3: Cross multiply
    386,471.63x = 579,435.82 × 170,227.74
  4. Step 4: Simplify right side
    386,471.63x = 98,636,046,365.33
  5. Step 5: Solve for x
    x = 98,636,046,365.33/386,471.63
  6. Step 6: Final answer
    x = 255,221.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.