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Finding the Fourth Proportional to 356,196.96, 491,781.24 and 317,890.44

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Solution

The fourth proportional to 356,196.96, 491,781.24 and 317,890.44 is: 438,893.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,196.96 : 491,781.24 = 317,890.44 : x
  2. Step 2: Convert to fraction form
    356,196.96/491,781.24 = 317,890.44/x
  3. Step 3: Cross multiply
    356,196.96x = 491,781.24 × 317,890.44
  4. Step 4: Simplify right side
    356,196.96x = 156,332,554,767.35
  5. Step 5: Solve for x
    x = 156,332,554,767.35/356,196.96
  6. Step 6: Final answer
    x = 438,893.57

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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.