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Finding the Fourth Proportional to 317,765.64, 476,664.86 and 81,110.37

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Solution

The fourth proportional to 317,765.64, 476,664.86 and 81,110.37 is: 121,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,765.64 : 476,664.86 = 81,110.37 : x
  2. Step 2: Convert to fraction form
    317,765.64/476,664.86 = 81,110.37/x
  3. Step 3: Cross multiply
    317,765.64x = 476,664.86 × 81,110.37
  4. Step 4: Simplify right side
    317,765.64x = 38,662,462,469.63
  5. Step 5: Solve for x
    x = 38,662,462,469.63/317,765.64
  6. Step 6: Final answer
    x = 121,669.74

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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.