Home / 455,416.20-683,124.30-139,872.60

Finding the Fourth Proportional to 455,416.20, 683,124.30 and 139,872.60

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Solution

The fourth proportional to 455,416.20, 683,124.30 and 139,872.60 is: 209,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,416.20 : 683,124.30 = 139,872.60 : x
  2. Step 2: Convert to fraction form
    455,416.20/683,124.30 = 139,872.60/x
  3. Step 3: Cross multiply
    455,416.20x = 683,124.30 × 139,872.60
  4. Step 4: Simplify right side
    455,416.20x = 95,550,371,964.18
  5. Step 5: Solve for x
    x = 95,550,371,964.18/455,416.20
  6. Step 6: Final answer
    x = 209,808.90

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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.