Home / 439,743.20-659,614.80-140,221.40

Finding the Fourth Proportional to 439,743.20, 659,614.80 and 140,221.40

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Solution

The fourth proportional to 439,743.20, 659,614.80 and 140,221.40 is: 210,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,743.20 : 659,614.80 = 140,221.40 : x
  2. Step 2: Convert to fraction form
    439,743.20/659,614.80 = 140,221.40/x
  3. Step 3: Cross multiply
    439,743.20x = 659,614.80 × 140,221.40
  4. Step 4: Simplify right side
    439,743.20x = 92,492,110,716.72
  5. Step 5: Solve for x
    x = 92,492,110,716.72/439,743.20
  6. Step 6: Final answer
    x = 210,332.10

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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.