Home / 289,918.03-434,770.42-100,329.73

Finding the Fourth Proportional to 289,918.03, 434,770.42 and 100,329.73

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Solution

The fourth proportional to 289,918.03, 434,770.42 and 100,329.73 is: 150,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,918.03 : 434,770.42 = 100,329.73 : x
  2. Step 2: Convert to fraction form
    289,918.03/434,770.42 = 100,329.73/x
  3. Step 3: Cross multiply
    289,918.03x = 434,770.42 × 100,329.73
  4. Step 4: Simplify right side
    289,918.03x = 43,620,398,850.59
  5. Step 5: Solve for x
    x = 43,620,398,850.59/289,918.03
  6. Step 6: Final answer
    x = 150,457.70

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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.