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Finding the Fourth Proportional to 471,974.80, 707,962.20 and 139,550.80

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Solution

The fourth proportional to 471,974.80, 707,962.20 and 139,550.80 is: 209,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,974.80 : 707,962.20 = 139,550.80 : x
  2. Step 2: Convert to fraction form
    471,974.80/707,962.20 = 139,550.80/x
  3. Step 3: Cross multiply
    471,974.80x = 707,962.20 × 139,550.80
  4. Step 4: Simplify right side
    471,974.80x = 98,796,691,379.76
  5. Step 5: Solve for x
    x = 98,796,691,379.76/471,974.80
  6. Step 6: Final answer
    x = 209,326.20

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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.