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Finding the Fourth Proportional to 381,889.88, 527,024.72 and 212,124.01

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Solution

The fourth proportional to 381,889.88, 527,024.72 and 212,124.01 is: 292,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,889.88 : 527,024.72 = 212,124.01 : x
  2. Step 2: Convert to fraction form
    381,889.88/527,024.72 = 212,124.01/x
  3. Step 3: Cross multiply
    381,889.88x = 527,024.72 × 212,124.01
  4. Step 4: Simplify right side
    381,889.88x = 111,794,593,279.78
  5. Step 5: Solve for x
    x = 111,794,593,279.78/381,889.88
  6. Step 6: Final answer
    x = 292,740.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.