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Finding the Fourth Proportional to 339,289.85, 508,159.42 and 161,921.43

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Solution

The fourth proportional to 339,289.85, 508,159.42 and 161,921.43 is: 242,512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,289.85 : 508,159.42 = 161,921.43 : x
  2. Step 2: Convert to fraction form
    339,289.85/508,159.42 = 161,921.43/x
  3. Step 3: Cross multiply
    339,289.85x = 508,159.42 × 161,921.43
  4. Step 4: Simplify right side
    339,289.85x = 82,281,899,549.57
  5. Step 5: Solve for x
    x = 82,281,899,549.57/339,289.85
  6. Step 6: Final answer
    x = 242,512.11

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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.