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Finding the Fourth Proportional to 279,196.84, 385,294.64 and 151,872.76

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Solution

The fourth proportional to 279,196.84, 385,294.64 and 151,872.76 is: 209,586.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,196.84 : 385,294.64 = 151,872.76 : x
  2. Step 2: Convert to fraction form
    279,196.84/385,294.64 = 151,872.76/x
  3. Step 3: Cross multiply
    279,196.84x = 385,294.64 × 151,872.76
  4. Step 4: Simplify right side
    279,196.84x = 58,515,760,390.01
  5. Step 5: Solve for x
    x = 58,515,760,390.01/279,196.84
  6. Step 6: Final answer
    x = 209,586.04

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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.