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Finding the Fourth Proportional to 326,854.70, 490,456.20 and 127,181.60

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Solution

The fourth proportional to 326,854.70, 490,456.20 and 127,181.60 is: 190,840.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,854.70 : 490,456.20 = 127,181.60 : x
  2. Step 2: Convert to fraction form
    326,854.70/490,456.20 = 127,181.60/x
  3. Step 3: Cross multiply
    326,854.70x = 490,456.20 × 127,181.60
  4. Step 4: Simplify right side
    326,854.70x = 62,377,004,245.92
  5. Step 5: Solve for x
    x = 62,377,004,245.92/326,854.70
  6. Step 6: Final answer
    x = 190,840.16

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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.