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Finding the Fourth Proportional to 316,516.21, 474,757.81 and 79,860.94

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Solution

The fourth proportional to 316,516.21, 474,757.81 and 79,860.94 is: 119,787.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,516.21 : 474,757.81 = 79,860.94 : x
  2. Step 2: Convert to fraction form
    316,516.21/474,757.81 = 79,860.94/x
  3. Step 3: Cross multiply
    316,516.21x = 474,757.81 × 79,860.94
  4. Step 4: Simplify right side
    316,516.21x = 37,914,603,592.39
  5. Step 5: Solve for x
    x = 37,914,603,592.39/316,516.21
  6. Step 6: Final answer
    x = 119,787.24

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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.