Home / 289,441.08-434,441.88-139,786.56

Finding the Fourth Proportional to 289,441.08, 434,441.88 and 139,786.56

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Solution

The fourth proportional to 289,441.08, 434,441.88 and 139,786.56 is: 209,815.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,441.08 : 434,441.88 = 139,786.56 : x
  2. Step 2: Convert to fraction form
    289,441.08/434,441.88 = 139,786.56/x
  3. Step 3: Cross multiply
    289,441.08x = 434,441.88 × 139,786.56
  4. Step 4: Simplify right side
    289,441.08x = 60,729,135,925.13
  5. Step 5: Solve for x
    x = 60,729,135,925.13/289,441.08
  6. Step 6: Final answer
    x = 209,815.19

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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.