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Finding the Fourth Proportional to 494,077.02, 681,808.56 and 279,212.40

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Solution

The fourth proportional to 494,077.02, 681,808.56 and 279,212.40 is: 385,303.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,077.02 : 681,808.56 = 279,212.40 : x
  2. Step 2: Convert to fraction form
    494,077.02/681,808.56 = 279,212.40/x
  3. Step 3: Cross multiply
    494,077.02x = 681,808.56 × 279,212.40
  4. Step 4: Simplify right side
    494,077.02x = 190,369,404,378.14
  5. Step 5: Solve for x
    x = 190,369,404,378.14/494,077.02
  6. Step 6: Final answer
    x = 385,303.09

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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.