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Finding the Fourth Proportional to 326,800.80, 450,866.88 and 213,688.80

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Solution

The fourth proportional to 326,800.80, 450,866.88 and 213,688.80 is: 294,813.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,800.80 : 450,866.88 = 213,688.80 : x
  2. Step 2: Convert to fraction form
    326,800.80/450,866.88 = 213,688.80/x
  3. Step 3: Cross multiply
    326,800.80x = 450,866.88 × 213,688.80
  4. Step 4: Simplify right side
    326,800.80x = 96,345,202,546.94
  5. Step 5: Solve for x
    x = 96,345,202,546.94/326,800.80
  6. Step 6: Final answer
    x = 294,813.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.