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Finding the Fourth Proportional to 279,426.56, 385,400.70 and 177,363.36

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Solution

The fourth proportional to 279,426.56, 385,400.70 and 177,363.36 is: 244,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,426.56 : 385,400.70 = 177,363.36 : x
  2. Step 2: Convert to fraction form
    279,426.56/385,400.70 = 177,363.36/x
  3. Step 3: Cross multiply
    279,426.56x = 385,400.70 × 177,363.36
  4. Step 4: Simplify right side
    279,426.56x = 68,355,963,098.35
  5. Step 5: Solve for x
    x = 68,355,963,098.35/279,426.56
  6. Step 6: Final answer
    x = 244,629.45

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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.