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Finding the Fourth Proportional to 515,906.56, 773,159.88 and 291,155.84

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Solution

The fourth proportional to 515,906.56, 773,159.88 and 291,155.84 is: 436,338.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,906.56 : 773,159.88 = 291,155.84 : x
  2. Step 2: Convert to fraction form
    515,906.56/773,159.88 = 291,155.84/x
  3. Step 3: Cross multiply
    515,906.56x = 773,159.88 × 291,155.84
  4. Step 4: Simplify right side
    515,906.56x = 225,110,014,315.70
  5. Step 5: Solve for x
    x = 225,110,014,315.70/515,906.56
  6. Step 6: Final answer
    x = 436,338.73

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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.