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Finding the Fourth Proportional to 378,803.10, 568,142.64 and 154,154.46

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Solution

The fourth proportional to 378,803.10, 568,142.64 and 154,154.46 is: 231,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,803.10 : 568,142.64 = 154,154.46 : x
  2. Step 2: Convert to fraction form
    378,803.10/568,142.64 = 154,154.46/x
  3. Step 3: Cross multiply
    378,803.10x = 568,142.64 × 154,154.46
  4. Step 4: Simplify right side
    378,803.10x = 87,581,721,872.17
  5. Step 5: Solve for x
    x = 87,581,721,872.17/378,803.10
  6. Step 6: Final answer
    x = 231,206.45

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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.