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Finding the Fourth Proportional to 401,670.50, 554,310.74 and 220,379.13

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Solution

The fourth proportional to 401,670.50, 554,310.74 and 220,379.13 is: 304,126.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,670.50 : 554,310.74 = 220,379.13 : x
  2. Step 2: Convert to fraction form
    401,670.50/554,310.74 = 220,379.13/x
  3. Step 3: Cross multiply
    401,670.50x = 554,310.74 × 220,379.13
  4. Step 4: Simplify right side
    401,670.50x = 122,158,519,181.80
  5. Step 5: Solve for x
    x = 122,158,519,181.80/401,670.50
  6. Step 6: Final answer
    x = 304,126.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.