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Finding the Fourth Proportional to 279,588.96, 419,775.48 and 266,991.84

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Solution

The fourth proportional to 279,588.96, 419,775.48 and 266,991.84 is: 400,862.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,588.96 : 419,775.48 = 266,991.84 : x
  2. Step 2: Convert to fraction form
    279,588.96/419,775.48 = 266,991.84/x
  3. Step 3: Cross multiply
    279,588.96x = 419,775.48 × 266,991.84
  4. Step 4: Simplify right side
    279,588.96x = 112,076,627,792.08
  5. Step 5: Solve for x
    x = 112,076,627,792.08/279,588.96
  6. Step 6: Final answer
    x = 400,862.14

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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.