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Finding the Fourth Proportional to 339,298.20, 509,020.20 and 102,664.80

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Solution

The fourth proportional to 339,298.20, 509,020.20 and 102,664.80 is: 154,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,298.20 : 509,020.20 = 102,664.80 : x
  2. Step 2: Convert to fraction form
    339,298.20/509,020.20 = 102,664.80/x
  3. Step 3: Cross multiply
    339,298.20x = 509,020.20 × 102,664.80
  4. Step 4: Simplify right side
    339,298.20x = 52,258,457,028.96
  5. Step 5: Solve for x
    x = 52,258,457,028.96/339,298.20
  6. Step 6: Final answer
    x = 154,019.26

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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.