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Finding the Fourth Proportional to 378,865.59, 568,391.94 and 112,624.98

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Solution

The fourth proportional to 378,865.59, 568,391.94 and 112,624.98 is: 168,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,865.59 : 568,391.94 = 112,624.98 : x
  2. Step 2: Convert to fraction form
    378,865.59/568,391.94 = 112,624.98/x
  3. Step 3: Cross multiply
    378,865.59x = 568,391.94 × 112,624.98
  4. Step 4: Simplify right side
    378,865.59x = 64,015,130,874.66
  5. Step 5: Solve for x
    x = 64,015,130,874.66/378,865.59
  6. Step 6: Final answer
    x = 168,965.28

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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.