Home / 289,811.52-434,718.78-131,929.56

Finding the Fourth Proportional to 289,811.52, 434,718.78 and 131,929.56

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Solution

The fourth proportional to 289,811.52, 434,718.78 and 131,929.56 is: 197,895.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,811.52 : 434,718.78 = 131,929.56 : x
  2. Step 2: Convert to fraction form
    289,811.52/434,718.78 = 131,929.56/x
  3. Step 3: Cross multiply
    289,811.52x = 434,718.78 × 131,929.56
  4. Step 4: Simplify right side
    289,811.52x = 57,352,257,369.14
  5. Step 5: Solve for x
    x = 57,352,257,369.14/289,811.52
  6. Step 6: Final answer
    x = 197,895.02

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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.