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Finding the Fourth Proportional to 219,853.80, 328,743.90 and 163,866.60

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Solution

The fourth proportional to 219,853.80, 328,743.90 and 163,866.60 is: 245,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,853.80 : 328,743.90 = 163,866.60 : x
  2. Step 2: Convert to fraction form
    219,853.80/328,743.90 = 163,866.60/x
  3. Step 3: Cross multiply
    219,853.80x = 328,743.90 × 163,866.60
  4. Step 4: Simplify right side
    219,853.80x = 53,870,145,163.74
  5. Step 5: Solve for x
    x = 53,870,145,163.74/219,853.80
  6. Step 6: Final answer
    x = 245,027.13

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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.