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Finding the Fourth Proportional to 356,427.88, 491,807.96 and 203,396.20

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Solution

The fourth proportional to 356,427.88, 491,807.96 and 203,396.20 is: 280,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,427.88 : 491,807.96 = 203,396.20 : x
  2. Step 2: Convert to fraction form
    356,427.88/491,807.96 = 203,396.20/x
  3. Step 3: Cross multiply
    356,427.88x = 491,807.96 × 203,396.20
  4. Step 4: Simplify right side
    356,427.88x = 100,031,870,193.75
  5. Step 5: Solve for x
    x = 100,031,870,193.75/356,427.88
  6. Step 6: Final answer
    x = 280,651.08

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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.