Home / 395,931.12-593,771.64-129,630.42

Finding the Fourth Proportional to 395,931.12, 593,771.64 and 129,630.42

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Solution

The fourth proportional to 395,931.12, 593,771.64 and 129,630.42 is: 194,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,931.12 : 593,771.64 = 129,630.42 : x
  2. Step 2: Convert to fraction form
    395,931.12/593,771.64 = 129,630.42/x
  3. Step 3: Cross multiply
    395,931.12x = 593,771.64 × 129,630.42
  4. Step 4: Simplify right side
    395,931.12x = 76,970,867,077.29
  5. Step 5: Solve for x
    x = 76,970,867,077.29/395,931.12
  6. Step 6: Final answer
    x = 194,404.69

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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.