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Finding the Fourth Proportional to 356,468.38, 491,907.63 and 203,500.54

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Solution

The fourth proportional to 356,468.38, 491,907.63 and 203,500.54 is: 280,820.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,468.38 : 491,907.63 = 203,500.54 : x
  2. Step 2: Convert to fraction form
    356,468.38/491,907.63 = 203,500.54/x
  3. Step 3: Cross multiply
    356,468.38x = 491,907.63 × 203,500.54
  4. Step 4: Simplify right side
    356,468.38x = 100,103,468,335.12
  5. Step 5: Solve for x
    x = 100,103,468,335.12/356,468.38
  6. Step 6: Final answer
    x = 280,820.05

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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.