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Finding the Fourth Proportional to 400,613.34, 552,846.54 and 219,336.78

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Solution

The fourth proportional to 400,613.34, 552,846.54 and 219,336.78 is: 302,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,613.34 : 552,846.54 = 219,336.78 : x
  2. Step 2: Convert to fraction form
    400,613.34/552,846.54 = 219,336.78/x
  3. Step 3: Cross multiply
    400,613.34x = 552,846.54 × 219,336.78
  4. Step 4: Simplify right side
    400,613.34x = 121,259,579,917.74
  5. Step 5: Solve for x
    x = 121,259,579,917.74/400,613.34
  6. Step 6: Final answer
    x = 302,684.83

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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.