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Finding the Fourth Proportional to 400,893.18, 553,232.73 and 219,611.61

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Solution

The fourth proportional to 400,893.18, 553,232.73 and 219,611.61 is: 303,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,893.18 : 553,232.73 = 219,611.61 : x
  2. Step 2: Convert to fraction form
    400,893.18/553,232.73 = 219,611.61/x
  3. Step 3: Cross multiply
    400,893.18x = 553,232.73 × 219,611.61
  4. Step 4: Simplify right side
    400,893.18x = 121,496,330,540.00
  5. Step 5: Solve for x
    x = 121,496,330,540.00/400,893.18
  6. Step 6: Final answer
    x = 303,064.10

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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.