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Finding the Fourth Proportional to 339,862.56, 509,760.70 and 103,207.29

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Solution

The fourth proportional to 339,862.56, 509,760.70 and 103,207.29 is: 154,800.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,862.56 : 509,760.70 = 103,207.29 : x
  2. Step 2: Convert to fraction form
    339,862.56/509,760.70 = 103,207.29/x
  3. Step 3: Cross multiply
    339,862.56x = 509,760.70 × 103,207.29
  4. Step 4: Simplify right side
    339,862.56x = 52,611,020,395.50
  5. Step 5: Solve for x
    x = 52,611,020,395.50/339,862.56
  6. Step 6: Final answer
    x = 154,800.87

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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.