Home / 439,930.20-659,895.30-140,432.70

Finding the Fourth Proportional to 439,930.20, 659,895.30 and 140,432.70

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Solution

The fourth proportional to 439,930.20, 659,895.30 and 140,432.70 is: 210,649.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,930.20 : 659,895.30 = 140,432.70 : x
  2. Step 2: Convert to fraction form
    439,930.20/659,895.30 = 140,432.70/x
  3. Step 3: Cross multiply
    439,930.20x = 659,895.30 × 140,432.70
  4. Step 4: Simplify right side
    439,930.20x = 92,670,878,696.31
  5. Step 5: Solve for x
    x = 92,670,878,696.31/439,930.20
  6. Step 6: Final answer
    x = 210,649.05

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Double scale
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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.