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Finding the Fourth Proportional to 355,549.50, 490,658.31 and 194,405.81

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Solution

The fourth proportional to 355,549.50, 490,658.31 and 194,405.81 is: 268,280.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,549.50 : 490,658.31 = 194,405.81 : x
  2. Step 2: Convert to fraction form
    355,549.50/490,658.31 = 194,405.81/x
  3. Step 3: Cross multiply
    355,549.50x = 490,658.31 × 194,405.81
  4. Step 4: Simplify right side
    355,549.50x = 95,386,823,735.49
  5. Step 5: Solve for x
    x = 95,386,823,735.49/355,549.50
  6. Step 6: Final answer
    x = 268,280.01

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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.