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Finding the Fourth Proportional to 317,885.88, 476,829.23 and 81,228.79

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Solution

The fourth proportional to 317,885.88, 476,829.23 and 81,228.79 is: 121,843.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,885.88 : 476,829.23 = 81,228.79 : x
  2. Step 2: Convert to fraction form
    317,885.88/476,829.23 = 81,228.79/x
  3. Step 3: Cross multiply
    317,885.88x = 476,829.23 × 81,228.79
  4. Step 4: Simplify right side
    317,885.88x = 38,732,259,791.31
  5. Step 5: Solve for x
    x = 38,732,259,791.31/317,885.88
  6. Step 6: Final answer
    x = 121,843.28

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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.