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Finding the Fourth Proportional to 483,158.88, 666,763.92 and 281,916

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Solution

The fourth proportional to 483,158.88, 666,763.92 and 281,916 is: 389,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,158.88 : 666,763.92 = 281,916 : x
  2. Step 2: Convert to fraction form
    483,158.88/666,763.92 = 281,916/x
  3. Step 3: Cross multiply
    483,158.88x = 666,763.92 × 281,916
  4. Step 4: Simplify right side
    483,158.88x = 187,971,417,270.72
  5. Step 5: Solve for x
    x = 187,971,417,270.72/483,158.88
  6. Step 6: Final answer
    x = 389,046.80

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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.