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Finding the Fourth Proportional to 317,764.69, 476,646.59 and 81,107.39

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Solution

The fourth proportional to 317,764.69, 476,646.59 and 81,107.39 is: 121,660.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,764.69 : 476,646.59 = 81,107.39 : x
  2. Step 2: Convert to fraction form
    317,764.69/476,646.59 = 81,107.39/x
  3. Step 3: Cross multiply
    317,764.69x = 476,646.59 × 81,107.39
  4. Step 4: Simplify right side
    317,764.69x = 38,659,562,261.69
  5. Step 5: Solve for x
    x = 38,659,562,261.69/317,764.69
  6. Step 6: Final answer
    x = 121,660.98

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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.