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Finding the Fourth Proportional to 354,676.40, 532,063.20 and 129,982.40

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Solution

The fourth proportional to 354,676.40, 532,063.20 and 129,982.40 is: 194,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,676.40 : 532,063.20 = 129,982.40 : x
  2. Step 2: Convert to fraction form
    354,676.40/532,063.20 = 129,982.40/x
  3. Step 3: Cross multiply
    354,676.40x = 532,063.20 × 129,982.40
  4. Step 4: Simplify right side
    354,676.40x = 69,158,851,687.68
  5. Step 5: Solve for x
    x = 69,158,851,687.68/354,676.40
  6. Step 6: Final answer
    x = 194,991.41

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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.