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Finding the Fourth Proportional to 279,357.14, 418,877.58 and 255,552.86

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Solution

The fourth proportional to 279,357.14, 418,877.58 and 255,552.86 is: 383,184.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,357.14 : 418,877.58 = 255,552.86 : x
  2. Step 2: Convert to fraction form
    279,357.14/418,877.58 = 255,552.86/x
  3. Step 3: Cross multiply
    279,357.14x = 418,877.58 × 255,552.86
  4. Step 4: Simplify right side
    279,357.14x = 107,045,363,558.88
  5. Step 5: Solve for x
    x = 107,045,363,558.88/279,357.14
  6. Step 6: Final answer
    x = 383,184.63

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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.