Home / 257,147.72-385,783.16-107,304.65

Finding the Fourth Proportional to 257,147.72, 385,783.16 and 107,304.65

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Solution

The fourth proportional to 257,147.72, 385,783.16 and 107,304.65 is: 160,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,147.72 : 385,783.16 = 107,304.65 : x
  2. Step 2: Convert to fraction form
    257,147.72/385,783.16 = 107,304.65/x
  3. Step 3: Cross multiply
    257,147.72x = 385,783.16 × 107,304.65
  4. Step 4: Simplify right side
    257,147.72x = 41,396,327,066.68
  5. Step 5: Solve for x
    x = 41,396,327,066.68/257,147.72
  6. Step 6: Final answer
    x = 160,982.68

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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.