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Finding the Fourth Proportional to 326,408.79, 450,328.65 and 213,297.15

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Solution

The fourth proportional to 326,408.79, 450,328.65 and 213,297.15 is: 294,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,408.79 : 450,328.65 = 213,297.15 : x
  2. Step 2: Convert to fraction form
    326,408.79/450,328.65 = 213,297.15/x
  3. Step 3: Cross multiply
    326,408.79x = 450,328.65 × 213,297.15
  4. Step 4: Simplify right side
    326,408.79x = 96,053,817,608.35
  5. Step 5: Solve for x
    x = 96,053,817,608.35/326,408.79
  6. Step 6: Final answer
    x = 294,274.60

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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.