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Finding the Fourth Proportional to 378,787.68, 568,006.56 and 141,960.96

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Solution

The fourth proportional to 378,787.68, 568,006.56 and 141,960.96 is: 212,875.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,787.68 : 568,006.56 = 141,960.96 : x
  2. Step 2: Convert to fraction form
    378,787.68/568,006.56 = 141,960.96/x
  3. Step 3: Cross multiply
    378,787.68x = 568,006.56 × 141,960.96
  4. Step 4: Simplify right side
    378,787.68x = 80,634,756,543.90
  5. Step 5: Solve for x
    x = 80,634,756,543.90/378,787.68
  6. Step 6: Final answer
    x = 212,875.87

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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.