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Finding the Fourth Proportional to 326,012.92, 449,960.70 and 212,638.84

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Solution

The fourth proportional to 326,012.92, 449,960.70 and 212,638.84 is: 293,482.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,012.92 : 449,960.70 = 212,638.84 : x
  2. Step 2: Convert to fraction form
    326,012.92/449,960.70 = 212,638.84/x
  3. Step 3: Cross multiply
    326,012.92x = 449,960.70 × 212,638.84
  4. Step 4: Simplify right side
    326,012.92x = 95,679,121,293.59
  5. Step 5: Solve for x
    x = 95,679,121,293.59/326,012.92
  6. Step 6: Final answer
    x = 293,482.61

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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.