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Finding the Fourth Proportional to 400,131.81, 599,531.34 and 281,554.03

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Solution

The fourth proportional to 400,131.81, 599,531.34 and 281,554.03 is: 421,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,131.81 : 599,531.34 = 281,554.03 : x
  2. Step 2: Convert to fraction form
    400,131.81/599,531.34 = 281,554.03/x
  3. Step 3: Cross multiply
    400,131.81x = 599,531.34 × 281,554.03
  4. Step 4: Simplify right side
    400,131.81x = 168,800,464,888.30
  5. Step 5: Solve for x
    x = 168,800,464,888.30/400,131.81
  6. Step 6: Final answer
    x = 421,862.15

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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.