Home / 430,864.60-646,393.82-131,375.45

Finding the Fourth Proportional to 430,864.60, 646,393.82 and 131,375.45

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Solution

The fourth proportional to 430,864.60, 646,393.82 and 131,375.45 is: 197,092.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,864.60 : 646,393.82 = 131,375.45 : x
  2. Step 2: Convert to fraction form
    430,864.60/646,393.82 = 131,375.45/x
  3. Step 3: Cross multiply
    430,864.60x = 646,393.82 × 131,375.45
  4. Step 4: Simplify right side
    430,864.60x = 84,920,278,979.72
  5. Step 5: Solve for x
    x = 84,920,278,979.72/430,864.60
  6. Step 6: Final answer
    x = 197,092.73

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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.