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Finding the Fourth Proportional to 339,402.24, 509,116.32 and 90,086.40

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Solution

The fourth proportional to 339,402.24, 509,116.32 and 90,086.40 is: 135,133.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,402.24 : 509,116.32 = 90,086.40 : x
  2. Step 2: Convert to fraction form
    339,402.24/509,116.32 = 90,086.40/x
  3. Step 3: Cross multiply
    339,402.24x = 509,116.32 × 90,086.40
  4. Step 4: Simplify right side
    339,402.24x = 45,864,456,450.05
  5. Step 5: Solve for x
    x = 45,864,456,450.05/339,402.24
  6. Step 6: Final answer
    x = 135,133.04

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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.