Home / 439,774.20-659,661.30-140,252.40

Finding the Fourth Proportional to 439,774.20, 659,661.30 and 140,252.40

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Solution

The fourth proportional to 439,774.20, 659,661.30 and 140,252.40 is: 210,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,774.20 : 659,661.30 = 140,252.40 : x
  2. Step 2: Convert to fraction form
    439,774.20/659,661.30 = 140,252.40/x
  3. Step 3: Cross multiply
    439,774.20x = 659,661.30 × 140,252.40
  4. Step 4: Simplify right side
    439,774.20x = 92,519,080,512.12
  5. Step 5: Solve for x
    x = 92,519,080,512.12/439,774.20
  6. Step 6: Final answer
    x = 210,378.60

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1.5x scale

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.