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Finding the Fourth Proportional to 355,655.31, 490,800.97 and 194,508.64

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Solution

The fourth proportional to 355,655.31, 490,800.97 and 194,508.64 is: 268,420.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,655.31 : 490,800.97 = 194,508.64 : x
  2. Step 2: Convert to fraction form
    355,655.31/490,800.97 = 194,508.64/x
  3. Step 3: Cross multiply
    355,655.31x = 490,800.97 × 194,508.64
  4. Step 4: Simplify right side
    355,655.31x = 95,465,029,185.38
  5. Step 5: Solve for x
    x = 95,465,029,185.38/355,655.31
  6. Step 6: Final answer
    x = 268,420.09

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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.