Home / 257,844.42-386,766.75-80,365.74

Finding the Fourth Proportional to 257,844.42, 386,766.75 and 80,365.74

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Solution

The fourth proportional to 257,844.42, 386,766.75 and 80,365.74 is: 120,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,844.42 : 386,766.75 = 80,365.74 : x
  2. Step 2: Convert to fraction form
    257,844.42/386,766.75 = 80,365.74/x
  3. Step 3: Cross multiply
    257,844.42x = 386,766.75 × 80,365.74
  4. Step 4: Simplify right side
    257,844.42x = 31,082,796,071.15
  5. Step 5: Solve for x
    x = 31,082,796,071.15/257,844.42
  6. Step 6: Final answer
    x = 120,548.65

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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.