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Finding the Fourth Proportional to 259,674.30, 389,511.45 and 231,680.70

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Solution

The fourth proportional to 259,674.30, 389,511.45 and 231,680.70 is: 347,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,674.30 : 389,511.45 = 231,680.70 : x
  2. Step 2: Convert to fraction form
    259,674.30/389,511.45 = 231,680.70/x
  3. Step 3: Cross multiply
    259,674.30x = 389,511.45 × 231,680.70
  4. Step 4: Simplify right side
    259,674.30x = 90,242,285,394.02
  5. Step 5: Solve for x
    x = 90,242,285,394.02/259,674.30
  6. Step 6: Final answer
    x = 347,521.05

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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.