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Finding the Fourth Proportional to 339,761.40, 509,447.70 and 103,068.60

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Solution

The fourth proportional to 339,761.40, 509,447.70 and 103,068.60 is: 154,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,761.40 : 509,447.70 = 103,068.60 : x
  2. Step 2: Convert to fraction form
    339,761.40/509,447.70 = 103,068.60/x
  3. Step 3: Cross multiply
    339,761.40x = 509,447.70 × 103,068.60
  4. Step 4: Simplify right side
    339,761.40x = 52,508,061,212.22
  5. Step 5: Solve for x
    x = 52,508,061,212.22/339,761.40
  6. Step 6: Final answer
    x = 154,543.93

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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.