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Finding the Fourth Proportional to 254,872.80, 382,309.20 and 77,371.20

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Solution

The fourth proportional to 254,872.80, 382,309.20 and 77,371.20 is: 116,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,872.80 : 382,309.20 = 77,371.20 : x
  2. Step 2: Convert to fraction form
    254,872.80/382,309.20 = 77,371.20/x
  3. Step 3: Cross multiply
    254,872.80x = 382,309.20 × 77,371.20
  4. Step 4: Simplify right side
    254,872.80x = 29,579,721,575.04
  5. Step 5: Solve for x
    x = 29,579,721,575.04/254,872.80
  6. Step 6: Final answer
    x = 116,056.80

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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.