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Finding the Fourth Proportional to 339,973.15, 509,977.92 and 87,255.83

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Solution

The fourth proportional to 339,973.15, 509,977.92 and 87,255.83 is: 130,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,973.15 : 509,977.92 = 87,255.83 : x
  2. Step 2: Convert to fraction form
    339,973.15/509,977.92 = 87,255.83/x
  3. Step 3: Cross multiply
    339,973.15x = 509,977.92 × 87,255.83
  4. Step 4: Simplify right side
    339,973.15x = 44,498,546,691.27
  5. Step 5: Solve for x
    x = 44,498,546,691.27/339,973.15
  6. Step 6: Final answer
    x = 130,888.41

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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.