Home / 257,821.55-386,742.81-122,816.22

Finding the Fourth Proportional to 257,821.55, 386,742.81 and 122,816.22

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Solution

The fourth proportional to 257,821.55, 386,742.81 and 122,816.22 is: 184,229.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,821.55 : 386,742.81 = 122,816.22 : x
  2. Step 2: Convert to fraction form
    257,821.55/386,742.81 = 122,816.22/x
  3. Step 3: Cross multiply
    257,821.55x = 386,742.81 × 122,816.22
  4. Step 4: Simplify right side
    257,821.55x = 47,498,290,036.38
  5. Step 5: Solve for x
    x = 47,498,290,036.38/257,821.55
  6. Step 6: Final answer
    x = 184,229.33

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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.