Home / 257,913.38-386,693.62-131,308.64

Finding the Fourth Proportional to 257,913.38, 386,693.62 and 131,308.64

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Solution

The fourth proportional to 257,913.38, 386,693.62 and 131,308.64 is: 196,873.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,913.38 : 386,693.62 = 131,308.64 : x
  2. Step 2: Convert to fraction form
    257,913.38/386,693.62 = 131,308.64/x
  3. Step 3: Cross multiply
    257,913.38x = 386,693.62 × 131,308.64
  4. Step 4: Simplify right side
    257,913.38x = 50,776,213,338.88
  5. Step 5: Solve for x
    x = 50,776,213,338.88/257,913.38
  6. Step 6: Final answer
    x = 196,873.13

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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.