Home / 380,516.13-570,403.62-211,881.42

Finding the Fourth Proportional to 380,516.13, 570,403.62 and 211,881.42

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Solution

The fourth proportional to 380,516.13, 570,403.62 and 211,881.42 is: 317,615.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,516.13 : 570,403.62 = 211,881.42 : x
  2. Step 2: Convert to fraction form
    380,516.13/570,403.62 = 211,881.42/x
  3. Step 3: Cross multiply
    380,516.13x = 570,403.62 × 211,881.42
  4. Step 4: Simplify right side
    380,516.13x = 120,857,928,978.74
  5. Step 5: Solve for x
    x = 120,857,928,978.74/380,516.13
  6. Step 6: Final answer
    x = 317,615.78

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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.