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Finding the Fourth Proportional to 355,972.52, 491,058.05 and 210,695.58

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Solution

The fourth proportional to 355,972.52, 491,058.05 and 210,695.58 is: 290,650.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,972.52 : 491,058.05 = 210,695.58 : x
  2. Step 2: Convert to fraction form
    355,972.52/491,058.05 = 210,695.58/x
  3. Step 3: Cross multiply
    355,972.52x = 491,058.05 × 210,695.58
  4. Step 4: Simplify right side
    355,972.52x = 103,463,759,604.94
  5. Step 5: Solve for x
    x = 103,463,759,604.94/355,972.52
  6. Step 6: Final answer
    x = 290,650.97

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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.