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Finding the Fourth Proportional to 339,582.80, 509,374.20 and 161,998.40

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Solution

The fourth proportional to 339,582.80, 509,374.20 and 161,998.40 is: 242,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,582.80 : 509,374.20 = 161,998.40 : x
  2. Step 2: Convert to fraction form
    339,582.80/509,374.20 = 161,998.40/x
  3. Step 3: Cross multiply
    339,582.80x = 509,374.20 × 161,998.40
  4. Step 4: Simplify right side
    339,582.80x = 82,517,805,401.28
  5. Step 5: Solve for x
    x = 82,517,805,401.28/339,582.80
  6. Step 6: Final answer
    x = 242,997.60

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1.5x scale

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.