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Finding the Fourth Proportional to 317,768.94, 476,669.81 and 81,113.67

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Solution

The fourth proportional to 317,768.94, 476,669.81 and 81,113.67 is: 121,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,768.94 : 476,669.81 = 81,113.67 : x
  2. Step 2: Convert to fraction form
    317,768.94/476,669.81 = 81,113.67/x
  3. Step 3: Cross multiply
    317,768.94x = 476,669.81 × 81,113.67
  4. Step 4: Simplify right side
    317,768.94x = 38,664,437,667.30
  5. Step 5: Solve for x
    x = 38,664,437,667.30/317,768.94
  6. Step 6: Final answer
    x = 121,674.69

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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.