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Finding the Fourth Proportional to 339,734.39, 509,656.86 and 126,503.10

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Solution

The fourth proportional to 339,734.39, 509,656.86 and 126,503.10 is: 189,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,734.39 : 509,656.86 = 126,503.10 : x
  2. Step 2: Convert to fraction form
    339,734.39/509,656.86 = 126,503.10/x
  3. Step 3: Cross multiply
    339,734.39x = 509,656.86 × 126,503.10
  4. Step 4: Simplify right side
    339,734.39x = 64,473,172,726.27
  5. Step 5: Solve for x
    x = 64,473,172,726.27/339,734.39
  6. Step 6: Final answer
    x = 189,775.23

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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.