Home / 289,983.40-434,975.10-259,570.60

Finding the Fourth Proportional to 289,983.40, 434,975.10 and 259,570.60

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Solution

The fourth proportional to 289,983.40, 434,975.10 and 259,570.60 is: 389,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,983.40 : 434,975.10 = 259,570.60 : x
  2. Step 2: Convert to fraction form
    289,983.40/434,975.10 = 259,570.60/x
  3. Step 3: Cross multiply
    289,983.40x = 434,975.10 × 259,570.60
  4. Step 4: Simplify right side
    289,983.40x = 112,906,747,692.06
  5. Step 5: Solve for x
    x = 112,906,747,692.06/289,983.40
  6. Step 6: Final answer
    x = 389,355.90

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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.