Home / 431,087.54-646,631.30-131,569.72

Finding the Fourth Proportional to 431,087.54, 646,631.30 and 131,569.72

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Solution

The fourth proportional to 431,087.54, 646,631.30 and 131,569.72 is: 197,354.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,087.54 : 646,631.30 = 131,569.72 : x
  2. Step 2: Convert to fraction form
    431,087.54/646,631.30 = 131,569.72/x
  3. Step 3: Cross multiply
    431,087.54x = 646,631.30 × 131,569.72
  4. Step 4: Simplify right side
    431,087.54x = 85,077,097,796.58
  5. Step 5: Solve for x
    x = 85,077,097,796.58/431,087.54
  6. Step 6: Final answer
    x = 197,354.58

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Similar ratio
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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.