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Finding the Fourth Proportional to 339,767.35, 509,638.05 and 103,100.47

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Solution

The fourth proportional to 339,767.35, 509,638.05 and 103,100.47 is: 154,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,767.35 : 509,638.05 = 103,100.47 : x
  2. Step 2: Convert to fraction form
    339,767.35/509,638.05 = 103,100.47/x
  3. Step 3: Cross multiply
    339,767.35x = 509,638.05 × 103,100.47
  4. Step 4: Simplify right side
    339,767.35x = 52,543,922,484.88
  5. Step 5: Solve for x
    x = 52,543,922,484.88/339,767.35
  6. Step 6: Final answer
    x = 154,646.77

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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.