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Finding the Fourth Proportional to 326,405.28, 450,323.82 and 213,293.64

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Solution

The fourth proportional to 326,405.28, 450,323.82 and 213,293.64 is: 294,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,405.28 : 450,323.82 = 213,293.64 : x
  2. Step 2: Convert to fraction form
    326,405.28/450,323.82 = 213,293.64/x
  3. Step 3: Cross multiply
    326,405.28x = 450,323.82 × 213,293.64
  4. Step 4: Simplify right side
    326,405.28x = 96,051,206,746.50
  5. Step 5: Solve for x
    x = 96,051,206,746.50/326,405.28
  6. Step 6: Final answer
    x = 294,269.77

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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.