Home / 430,865.35-646,394.94-131,376.21

Finding the Fourth Proportional to 430,865.35, 646,394.94 and 131,376.21

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Solution

The fourth proportional to 430,865.35, 646,394.94 and 131,376.21 is: 197,093.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,865.35 : 646,394.94 = 131,376.21 : x
  2. Step 2: Convert to fraction form
    430,865.35/646,394.94 = 131,376.21/x
  3. Step 3: Cross multiply
    430,865.35x = 646,394.94 × 131,376.21
  4. Step 4: Simplify right side
    430,865.35x = 84,920,917,380.38
  5. Step 5: Solve for x
    x = 84,920,917,380.38/430,865.35
  6. Step 6: Final answer
    x = 197,093.87

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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.