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Finding the Fourth Proportional to 355,701.30, 490,864.21 and 194,559.49

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Solution

The fourth proportional to 355,701.30, 490,864.21 and 194,559.49 is: 268,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,701.30 : 490,864.21 = 194,559.49 : x
  2. Step 2: Convert to fraction form
    355,701.30/490,864.21 = 194,559.49/x
  3. Step 3: Cross multiply
    355,701.30x = 490,864.21 × 194,559.49
  4. Step 4: Simplify right side
    355,701.30x = 95,502,290,356.85
  5. Step 5: Solve for x
    x = 95,502,290,356.85/355,701.30
  6. Step 6: Final answer
    x = 268,490.14

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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.