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Finding the Fourth Proportional to 400,671.16, 552,909.14 and 219,379.80

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Solution

The fourth proportional to 400,671.16, 552,909.14 and 219,379.80 is: 302,734.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,671.16 : 552,909.14 = 219,379.80 : x
  2. Step 2: Convert to fraction form
    400,671.16/552,909.14 = 219,379.80/x
  3. Step 3: Cross multiply
    400,671.16x = 552,909.14 × 219,379.80
  4. Step 4: Simplify right side
    400,671.16x = 121,297,096,551.37
  5. Step 5: Solve for x
    x = 121,297,096,551.37/400,671.16
  6. Step 6: Final answer
    x = 302,734.78

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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.