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Finding the Fourth Proportional to 217,042.80, 325,871.40 and 170,348.40

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Solution

The fourth proportional to 217,042.80, 325,871.40 and 170,348.40 is: 255,763.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,042.80 : 325,871.40 = 170,348.40 : x
  2. Step 2: Convert to fraction form
    217,042.80/325,871.40 = 170,348.40/x
  3. Step 3: Cross multiply
    217,042.80x = 325,871.40 × 170,348.40
  4. Step 4: Simplify right side
    217,042.80x = 55,511,671,595.76
  5. Step 5: Solve for x
    x = 55,511,671,595.76/217,042.80
  6. Step 6: Final answer
    x = 255,763.71

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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.