Home / 257,821.23-386,742.21-122,815.89

Finding the Fourth Proportional to 257,821.23, 386,742.21 and 122,815.89

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Solution

The fourth proportional to 257,821.23, 386,742.21 and 122,815.89 is: 184,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,821.23 : 386,742.21 = 122,815.89 : x
  2. Step 2: Convert to fraction form
    257,821.23/386,742.21 = 122,815.89/x
  3. Step 3: Cross multiply
    257,821.23x = 386,742.21 × 122,815.89
  4. Step 4: Simplify right side
    257,821.23x = 47,498,089,557.92
  5. Step 5: Solve for x
    x = 47,498,089,557.92/257,821.23
  6. Step 6: Final answer
    x = 184,228.78

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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.