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Finding the Fourth Proportional to 378,472.36, 567,818.12 and 112,239.28

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Solution

The fourth proportional to 378,472.36, 567,818.12 and 112,239.28 is: 168,391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,472.36 : 567,818.12 = 112,239.28 : x
  2. Step 2: Convert to fraction form
    378,472.36/567,818.12 = 112,239.28/x
  3. Step 3: Cross multiply
    378,472.36x = 567,818.12 × 112,239.28
  4. Step 4: Simplify right side
    378,472.36x = 63,731,496,959.75
  5. Step 5: Solve for x
    x = 63,731,496,959.75/378,472.36
  6. Step 6: Final answer
    x = 168,391.42

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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.