Home / 455,490.20-683,235.30-139,946.60

Finding the Fourth Proportional to 455,490.20, 683,235.30 and 139,946.60

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Solution

The fourth proportional to 455,490.20, 683,235.30 and 139,946.60 is: 209,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,490.20 : 683,235.30 = 139,946.60 : x
  2. Step 2: Convert to fraction form
    455,490.20/683,235.30 = 139,946.60/x
  3. Step 3: Cross multiply
    455,490.20x = 683,235.30 × 139,946.60
  4. Step 4: Simplify right side
    455,490.20x = 95,616,457,234.98
  5. Step 5: Solve for x
    x = 95,616,457,234.98/455,490.20
  6. Step 6: Final answer
    x = 209,919.90

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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.