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Finding the Fourth Proportional to 515,842.35, 773,799.07 and 216,021.05

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Solution

The fourth proportional to 515,842.35, 773,799.07 and 216,021.05 is: 324,046.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,842.35 : 773,799.07 = 216,021.05 : x
  2. Step 2: Convert to fraction form
    515,842.35/773,799.07 = 216,021.05/x
  3. Step 3: Cross multiply
    515,842.35x = 773,799.07 × 216,021.05
  4. Step 4: Simplify right side
    515,842.35x = 167,156,886,893.20
  5. Step 5: Solve for x
    x = 167,156,886,893.20/515,842.35
  6. Step 6: Final answer
    x = 324,046.46

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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.