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Finding the Fourth Proportional to 483,249.38, 666,845.10 and 279,313.50

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Solution

The fourth proportional to 483,249.38, 666,845.10 and 279,313.50 is: 385,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,249.38 : 666,845.10 = 279,313.50 : x
  2. Step 2: Convert to fraction form
    483,249.38/666,845.10 = 279,313.50/x
  3. Step 3: Cross multiply
    483,249.38x = 666,845.10 × 279,313.50
  4. Step 4: Simplify right side
    483,249.38x = 186,258,838,838.85
  5. Step 5: Solve for x
    x = 186,258,838,838.85/483,249.38
  6. Step 6: Final answer
    x = 385,430.07

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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.