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Finding the Fourth Proportional to 321,692.80, 482,846.40 and 274,998.40

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Solution

The fourth proportional to 321,692.80, 482,846.40 and 274,998.40 is: 412,760.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,692.80 : 482,846.40 = 274,998.40 : x
  2. Step 2: Convert to fraction form
    321,692.80/482,846.40 = 274,998.40/x
  3. Step 3: Cross multiply
    321,692.80x = 482,846.40 × 274,998.40
  4. Step 4: Simplify right side
    321,692.80x = 132,781,987,445.76
  5. Step 5: Solve for x
    x = 132,781,987,445.76/321,692.80
  6. Step 6: Final answer
    x = 412,760.21

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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.