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Finding the Fourth Proportional to 351,053.78, 526,876.07 and 328,910.40

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Solution

The fourth proportional to 351,053.78, 526,876.07 and 328,910.40 is: 493,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,053.78 : 526,876.07 = 328,910.40 : x
  2. Step 2: Convert to fraction form
    351,053.78/526,876.07 = 328,910.40/x
  3. Step 3: Cross multiply
    351,053.78x = 526,876.07 × 328,910.40
  4. Step 4: Simplify right side
    351,053.78x = 173,295,017,289.58
  5. Step 5: Solve for x
    x = 173,295,017,289.58/351,053.78
  6. Step 6: Final answer
    x = 493,642.37

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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.