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Finding the Fourth Proportional to 339,755.05, 509,630.55 and 87,035.05

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Solution

The fourth proportional to 339,755.05, 509,630.55 and 87,035.05 is: 130,552.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,755.05 : 509,630.55 = 87,035.05 : x
  2. Step 2: Convert to fraction form
    339,755.05/509,630.55 = 87,035.05/x
  3. Step 3: Cross multiply
    339,755.05x = 509,630.55 × 87,035.05
  4. Step 4: Simplify right side
    339,755.05x = 44,355,720,400.78
  5. Step 5: Solve for x
    x = 44,355,720,400.78/339,755.05
  6. Step 6: Final answer
    x = 130,552.06

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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.