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Finding the Fourth Proportional to 455,940.30, 683,910.45 and 118,980.30

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Solution

The fourth proportional to 455,940.30, 683,910.45 and 118,980.30 is: 178,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,940.30 : 683,910.45 = 118,980.30 : x
  2. Step 2: Convert to fraction form
    455,940.30/683,910.45 = 118,980.30/x
  3. Step 3: Cross multiply
    455,940.30x = 683,910.45 × 118,980.30
  4. Step 4: Simplify right side
    455,940.30x = 81,371,870,514.14
  5. Step 5: Solve for x
    x = 81,371,870,514.14/455,940.30
  6. Step 6: Final answer
    x = 178,470.45

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Similar ratio
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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.