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Finding the Fourth Proportional to 356,419.50, 491,872.46 and 203,482.59

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Solution

The fourth proportional to 356,419.50, 491,872.46 and 203,482.59 is: 280,813.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,419.50 : 491,872.46 = 203,482.59 : x
  2. Step 2: Convert to fraction form
    356,419.50/491,872.46 = 203,482.59/x
  3. Step 3: Cross multiply
    356,419.50x = 491,872.46 × 203,482.59
  4. Step 4: Simplify right side
    356,419.50x = 100,087,482,110.47
  5. Step 5: Solve for x
    x = 100,087,482,110.47/356,419.50
  6. Step 6: Final answer
    x = 280,813.71

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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.