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Finding the Fourth Proportional to 339,751.56, 509,625.30 and 87,031.56

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Solution

The fourth proportional to 339,751.56, 509,625.30 and 87,031.56 is: 130,546.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,751.56 : 509,625.30 = 87,031.56 : x
  2. Step 2: Convert to fraction form
    339,751.56/509,625.30 = 87,031.56/x
  3. Step 3: Cross multiply
    339,751.56x = 509,625.30 × 87,031.56
  4. Step 4: Simplify right side
    339,751.56x = 44,353,484,874.47
  5. Step 5: Solve for x
    x = 44,353,484,874.47/339,751.56
  6. Step 6: Final answer
    x = 130,546.82

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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.