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Finding the Fourth Proportional to 355,953.08, 491,238.06 and 205,047.48

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Solution

The fourth proportional to 355,953.08, 491,238.06 and 205,047.48 is: 282,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,953.08 : 491,238.06 = 205,047.48 : x
  2. Step 2: Convert to fraction form
    355,953.08/491,238.06 = 205,047.48/x
  3. Step 3: Cross multiply
    355,953.08x = 491,238.06 × 205,047.48
  4. Step 4: Simplify right side
    355,953.08x = 100,727,126,283.09
  5. Step 5: Solve for x
    x = 100,727,126,283.09/355,953.08
  6. Step 6: Final answer
    x = 282,978.66

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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.