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Finding the Fourth Proportional to 483,126.39, 666,564.90 and 279,102.86

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Solution

The fourth proportional to 483,126.39, 666,564.90 and 279,102.86 is: 385,075.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,126.39 : 666,564.90 = 279,102.86 : x
  2. Step 2: Convert to fraction form
    483,126.39/666,564.90 = 279,102.86/x
  3. Step 3: Cross multiply
    483,126.39x = 666,564.90 × 279,102.86
  4. Step 4: Simplify right side
    483,126.39x = 186,040,169,965.61
  5. Step 5: Solve for x
    x = 186,040,169,965.61/483,126.39
  6. Step 6: Final answer
    x = 385,075.57

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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.