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Finding the Fourth Proportional to 213,479.54, 320,207.76 and 108,295.78

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Solution

The fourth proportional to 213,479.54, 320,207.76 and 108,295.78 is: 162,437.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,479.54 : 320,207.76 = 108,295.78 : x
  2. Step 2: Convert to fraction form
    213,479.54/320,207.76 = 108,295.78/x
  3. Step 3: Cross multiply
    213,479.54x = 320,207.76 × 108,295.78
  4. Step 4: Simplify right side
    213,479.54x = 34,677,149,131.25
  5. Step 5: Solve for x
    x = 34,677,149,131.25/213,479.54
  6. Step 6: Final answer
    x = 162,437.81

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1.5x scale

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.