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Finding the Fourth Proportional to 279,315.58, 385,586.13 and 178,771.90

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Solution

The fourth proportional to 279,315.58, 385,586.13 and 178,771.90 is: 246,788.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,315.58 : 385,586.13 = 178,771.90 : x
  2. Step 2: Convert to fraction form
    279,315.58/385,586.13 = 178,771.90/x
  3. Step 3: Cross multiply
    279,315.58x = 385,586.13 × 178,771.90
  4. Step 4: Simplify right side
    279,315.58x = 68,931,964,780.18
  5. Step 5: Solve for x
    x = 68,931,964,780.18/279,315.58
  6. Step 6: Final answer
    x = 246,788.83

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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.