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Finding the Fourth Proportional to 260,471.14, 390,201.15 and 191,958.25

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Solution

The fourth proportional to 260,471.14, 390,201.15 and 191,958.25 is: 287,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,471.14 : 390,201.15 = 191,958.25 : x
  2. Step 2: Convert to fraction form
    260,471.14/390,201.15 = 191,958.25/x
  3. Step 3: Cross multiply
    260,471.14x = 390,201.15 × 191,958.25
  4. Step 4: Simplify right side
    260,471.14x = 74,902,329,901.99
  5. Step 5: Solve for x
    x = 74,902,329,901.99/260,471.14
  6. Step 6: Final answer
    x = 287,564.79

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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.