Home / 289,270.70-434,185.93-139,616.34

Finding the Fourth Proportional to 289,270.70, 434,185.93 and 139,616.34

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Solution

The fourth proportional to 289,270.70, 434,185.93 and 139,616.34 is: 209,559.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,270.70 : 434,185.93 = 139,616.34 : x
  2. Step 2: Convert to fraction form
    289,270.70/434,185.93 = 139,616.34/x
  3. Step 3: Cross multiply
    289,270.70x = 434,185.93 × 139,616.34
  4. Step 4: Simplify right side
    289,270.70x = 60,619,450,077.06
  5. Step 5: Solve for x
    x = 60,619,450,077.06/289,270.70
  6. Step 6: Final answer
    x = 209,559.59

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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.