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Finding the Fourth Proportional to 400,855.42, 552,798.84 and 239,684.86

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Solution

The fourth proportional to 400,855.42, 552,798.84 and 239,684.86 is: 330,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,855.42 : 552,798.84 = 239,684.86 : x
  2. Step 2: Convert to fraction form
    400,855.42/552,798.84 = 239,684.86/x
  3. Step 3: Cross multiply
    400,855.42x = 552,798.84 × 239,684.86
  4. Step 4: Simplify right side
    400,855.42x = 132,497,512,573.56
  5. Step 5: Solve for x
    x = 132,497,512,573.56/400,855.42
  6. Step 6: Final answer
    x = 330,536.91

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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.