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Finding the Fourth Proportional to 339,881.80, 509,385.30 and 162,005.80

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Solution

The fourth proportional to 339,881.80, 509,385.30 and 162,005.80 is: 242,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,881.80 : 509,385.30 = 162,005.80 : x
  2. Step 2: Convert to fraction form
    339,881.80/509,385.30 = 162,005.80/x
  3. Step 3: Cross multiply
    339,881.80x = 509,385.30 × 162,005.80
  4. Step 4: Simplify right side
    339,881.80x = 82,523,373,034.74
  5. Step 5: Solve for x
    x = 82,523,373,034.74/339,881.80
  6. Step 6: Final answer
    x = 242,800.21

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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.