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Finding the Fourth Proportional to 279,195.84, 385,293.26 and 151,871.76

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Solution

The fourth proportional to 279,195.84, 385,293.26 and 151,871.76 is: 209,584.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,195.84 : 385,293.26 = 151,871.76 : x
  2. Step 2: Convert to fraction form
    279,195.84/385,293.26 = 151,871.76/x
  3. Step 3: Cross multiply
    279,195.84x = 385,293.26 × 151,871.76
  4. Step 4: Simplify right side
    279,195.84x = 58,515,165,512.34
  5. Step 5: Solve for x
    x = 58,515,165,512.34/279,195.84
  6. Step 6: Final answer
    x = 209,584.66

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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.