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Finding the Fourth Proportional to 355,999.05, 491,278.86 and 194,854.95

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Solution

The fourth proportional to 355,999.05, 491,278.86 and 194,854.95 is: 268,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,999.05 : 491,278.86 = 194,854.95 : x
  2. Step 2: Convert to fraction form
    355,999.05/491,278.86 = 194,854.95/x
  3. Step 3: Cross multiply
    355,999.05x = 491,278.86 × 194,854.95
  4. Step 4: Simplify right side
    355,999.05x = 95,728,117,701.36
  5. Step 5: Solve for x
    x = 95,728,117,701.36/355,999.05
  6. Step 6: Final answer
    x = 268,899.92

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1.5x scale

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.