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Finding the Fourth Proportional to 521,675.67, 719,919.89 and 303,878.75

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Solution

The fourth proportional to 521,675.67, 719,919.89 and 303,878.75 is: 419,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,675.67 : 719,919.89 = 303,878.75 : x
  2. Step 2: Convert to fraction form
    521,675.67/719,919.89 = 303,878.75/x
  3. Step 3: Cross multiply
    521,675.67x = 719,919.89 × 303,878.75
  4. Step 4: Simplify right side
    521,675.67x = 218,768,356,273.34
  5. Step 5: Solve for x
    x = 218,768,356,273.34/521,675.67
  6. Step 6: Final answer
    x = 419,357.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.