Home / 351,788.90-528,072.15-218,819.30

Finding the Fourth Proportional to 351,788.90, 528,072.15 and 218,819.30

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Solution

The fourth proportional to 351,788.90, 528,072.15 and 218,819.30 is: 328,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,788.90 : 528,072.15 = 218,819.30 : x
  2. Step 2: Convert to fraction form
    351,788.90/528,072.15 = 218,819.30/x
  3. Step 3: Cross multiply
    351,788.90x = 528,072.15 × 218,819.30
  4. Step 4: Simplify right side
    351,788.90x = 115,552,378,212.50
  5. Step 5: Solve for x
    x = 115,552,378,212.50/351,788.90
  6. Step 6: Final answer
    x = 328,470.79

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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.