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Finding the Fourth Proportional to 339,694.60, 509,543.70 and 103,037.50

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Solution

The fourth proportional to 339,694.60, 509,543.70 and 103,037.50 is: 154,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,694.60 : 509,543.70 = 103,037.50 : x
  2. Step 2: Convert to fraction form
    339,694.60/509,543.70 = 103,037.50/x
  3. Step 3: Cross multiply
    339,694.60x = 509,543.70 × 103,037.50
  4. Step 4: Simplify right side
    339,694.60x = 52,502,108,988.75
  5. Step 5: Solve for x
    x = 52,502,108,988.75/339,694.60
  6. Step 6: Final answer
    x = 154,556.80

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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.