Home / 430,536.06-645,942.47-131,074.61

Finding the Fourth Proportional to 430,536.06, 645,942.47 and 131,074.61

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Solution

The fourth proportional to 430,536.06, 645,942.47 and 131,074.61 is: 196,654.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,536.06 : 645,942.47 = 131,074.61 : x
  2. Step 2: Convert to fraction form
    430,536.06/645,942.47 = 131,074.61/x
  3. Step 3: Cross multiply
    430,536.06x = 645,942.47 × 131,074.61
  4. Step 4: Simplify right side
    430,536.06x = 84,666,653,452.60
  5. Step 5: Solve for x
    x = 84,666,653,452.60/430,536.06
  6. Step 6: Final answer
    x = 196,654.04

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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.