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Finding the Fourth Proportional to 210,324.87, 315,488.12 and 52,553.48

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Solution

The fourth proportional to 210,324.87, 315,488.12 and 52,553.48 is: 78,830.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,324.87 : 315,488.12 = 52,553.48 : x
  2. Step 2: Convert to fraction form
    210,324.87/315,488.12 = 52,553.48/x
  3. Step 3: Cross multiply
    210,324.87x = 315,488.12 × 52,553.48
  4. Step 4: Simplify right side
    210,324.87x = 16,579,996,764.45
  5. Step 5: Solve for x
    x = 16,579,996,764.45/210,324.87
  6. Step 6: Final answer
    x = 78,830.41

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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.