Home / 430,623.10-645,934.65-131,101.30

Finding the Fourth Proportional to 430,623.10, 645,934.65 and 131,101.30

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Solution

The fourth proportional to 430,623.10, 645,934.65 and 131,101.30 is: 196,651.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,623.10 : 645,934.65 = 131,101.30 : x
  2. Step 2: Convert to fraction form
    430,623.10/645,934.65 = 131,101.30/x
  3. Step 3: Cross multiply
    430,623.10x = 645,934.65 × 131,101.30
  4. Step 4: Simplify right side
    430,623.10x = 84,682,872,330.05
  5. Step 5: Solve for x
    x = 84,682,872,330.05/430,623.10
  6. Step 6: Final answer
    x = 196,651.95

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Similar ratio
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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.