Home / 380,470.11-570,742.92-140,646.85

Finding the Fourth Proportional to 380,470.11, 570,742.92 and 140,646.85

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Solution

The fourth proportional to 380,470.11, 570,742.92 and 140,646.85 is: 210,984.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,470.11 : 570,742.92 = 140,646.85 : x
  2. Step 2: Convert to fraction form
    380,470.11/570,742.92 = 140,646.85/x
  3. Step 3: Cross multiply
    380,470.11x = 570,742.92 × 140,646.85
  4. Step 4: Simplify right side
    380,470.11x = 80,273,193,857.80
  5. Step 5: Solve for x
    x = 80,273,193,857.80/380,470.11
  6. Step 6: Final answer
    x = 210,984.23

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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.