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Finding the Fourth Proportional to 339,289.31, 508,158.58 and 161,920.87

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Solution

The fourth proportional to 339,289.31, 508,158.58 and 161,920.87 is: 242,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,289.31 : 508,158.58 = 161,920.87 : x
  2. Step 2: Convert to fraction form
    339,289.31/508,158.58 = 161,920.87/x
  3. Step 3: Cross multiply
    339,289.31x = 508,158.58 × 161,920.87
  4. Step 4: Simplify right side
    339,289.31x = 82,281,480,858.36
  5. Step 5: Solve for x
    x = 82,281,480,858.36/339,289.31
  6. Step 6: Final answer
    x = 242,511.27

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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.