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Finding the Fourth Proportional to 260,043.80, 389,774.10 and 133,635.20

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Solution

The fourth proportional to 260,043.80, 389,774.10 and 133,635.20 is: 200,302.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,043.80 : 389,774.10 = 133,635.20 : x
  2. Step 2: Convert to fraction form
    260,043.80/389,774.10 = 133,635.20/x
  3. Step 3: Cross multiply
    260,043.80x = 389,774.10 × 133,635.20
  4. Step 4: Simplify right side
    260,043.80x = 52,087,539,808.32
  5. Step 5: Solve for x
    x = 52,087,539,808.32/260,043.80
  6. Step 6: Final answer
    x = 200,302.95

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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.