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Finding the Fourth Proportional to 356,436.15, 491,863.08 and 203,468.25

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Solution

The fourth proportional to 356,436.15, 491,863.08 and 203,468.25 is: 280,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,436.15 : 491,863.08 = 203,468.25 : x
  2. Step 2: Convert to fraction form
    356,436.15/491,863.08 = 203,468.25/x
  3. Step 3: Cross multiply
    356,436.15x = 491,863.08 × 203,468.25
  4. Step 4: Simplify right side
    356,436.15x = 100,078,520,127.21
  5. Step 5: Solve for x
    x = 100,078,520,127.21/356,436.15
  6. Step 6: Final answer
    x = 280,775.45

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Half scale
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Double scale
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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.