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Finding the Fourth Proportional to 526,238.84, 789,356.40 and 189,278.92

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Solution

The fourth proportional to 526,238.84, 789,356.40 and 189,278.92 is: 283,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,238.84 : 789,356.40 = 189,278.92 : x
  2. Step 2: Convert to fraction form
    526,238.84/789,356.40 = 189,278.92/x
  3. Step 3: Cross multiply
    526,238.84x = 789,356.40 × 189,278.92
  4. Step 4: Simplify right side
    526,238.84x = 149,408,526,887.09
  5. Step 5: Solve for x
    x = 149,408,526,887.09/526,238.84
  6. Step 6: Final answer
    x = 283,917.71

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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.