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Finding the Fourth Proportional to 317,769.94, 476,671.31 and 81,114.67

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Solution

The fourth proportional to 317,769.94, 476,671.31 and 81,114.67 is: 121,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,769.94 : 476,671.31 = 81,114.67 : x
  2. Step 2: Convert to fraction form
    317,769.94/476,671.31 = 81,114.67/x
  3. Step 3: Cross multiply
    317,769.94x = 476,671.31 × 81,114.67
  4. Step 4: Simplify right side
    317,769.94x = 38,665,036,009.12
  5. Step 5: Solve for x
    x = 38,665,036,009.12/317,769.94
  6. Step 6: Final answer
    x = 121,676.19

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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.