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Finding the Fourth Proportional to 279,261.94, 385,385.42 and 151,937.64

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Solution

The fourth proportional to 279,261.94, 385,385.42 and 151,937.64 is: 209,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,261.94 : 385,385.42 = 151,937.64 : x
  2. Step 2: Convert to fraction form
    279,261.94/385,385.42 = 151,937.64/x
  3. Step 3: Cross multiply
    279,261.94x = 385,385.42 × 151,937.64
  4. Step 4: Simplify right side
    279,261.94x = 58,554,551,205.21
  5. Step 5: Solve for x
    x = 58,554,551,205.21/279,261.94
  6. Step 6: Final answer
    x = 209,676.09

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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.