Home / 439,946.70-659,920.05-140,449.20

Finding the Fourth Proportional to 439,946.70, 659,920.05 and 140,449.20

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Solution

The fourth proportional to 439,946.70, 659,920.05 and 140,449.20 is: 210,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,946.70 : 659,920.05 = 140,449.20 : x
  2. Step 2: Convert to fraction form
    439,946.70/659,920.05 = 140,449.20/x
  3. Step 3: Cross multiply
    439,946.70x = 659,920.05 × 140,449.20
  4. Step 4: Simplify right side
    439,946.70x = 92,685,243,086.46
  5. Step 5: Solve for x
    x = 92,685,243,086.46/439,946.70
  6. Step 6: Final answer
    x = 210,673.80

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Similar ratio
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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.