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Finding the Fourth Proportional to 279,676.20, 385,820.91 and 189,063.93

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Solution

The fourth proportional to 279,676.20, 385,820.91 and 189,063.93 is: 260,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,676.20 : 385,820.91 = 189,063.93 : x
  2. Step 2: Convert to fraction form
    279,676.20/385,820.91 = 189,063.93/x
  3. Step 3: Cross multiply
    279,676.20x = 385,820.91 × 189,063.93
  4. Step 4: Simplify right side
    279,676.20x = 72,944,817,520.78
  5. Step 5: Solve for x
    x = 72,944,817,520.78/279,676.20
  6. Step 6: Final answer
    x = 260,818.82

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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.