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Finding the Fourth Proportional to 355,538.13, 490,642.56 and 194,393.13

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Solution

The fourth proportional to 355,538.13, 490,642.56 and 194,393.13 is: 268,262.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,538.13 : 490,642.56 = 194,393.13 : x
  2. Step 2: Convert to fraction form
    355,538.13/490,642.56 = 194,393.13/x
  3. Step 3: Cross multiply
    355,538.13x = 490,642.56 × 194,393.13
  4. Step 4: Simplify right side
    355,538.13x = 95,377,542,949.61
  5. Step 5: Solve for x
    x = 95,377,542,949.61/355,538.13
  6. Step 6: Final answer
    x = 268,262.49

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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.