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Finding the Fourth Proportional to 260,453.05, 390,801.12 and 92,100.88

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Solution

The fourth proportional to 260,453.05, 390,801.12 and 92,100.88 is: 138,194.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,453.05 : 390,801.12 = 92,100.88 : x
  2. Step 2: Convert to fraction form
    260,453.05/390,801.12 = 92,100.88/x
  3. Step 3: Cross multiply
    260,453.05x = 390,801.12 × 92,100.88
  4. Step 4: Simplify right side
    260,453.05x = 35,993,127,056.99
  5. Step 5: Solve for x
    x = 35,993,127,056.99/260,453.05
  6. Step 6: Final answer
    x = 138,194.30

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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.