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Finding the Fourth Proportional to 218,037.10, 326,836.95 and 99,793.30

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Solution

The fourth proportional to 218,037.10, 326,836.95 and 99,793.30 is: 149,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,037.10 : 326,836.95 = 99,793.30 : x
  2. Step 2: Convert to fraction form
    218,037.10/326,836.95 = 99,793.30/x
  3. Step 3: Cross multiply
    218,037.10x = 326,836.95 × 99,793.30
  4. Step 4: Simplify right side
    218,037.10x = 32,616,137,802.44
  5. Step 5: Solve for x
    x = 32,616,137,802.44/218,037.10
  6. Step 6: Final answer
    x = 149,589.85

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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.