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Finding the Fourth Proportional to 404,459, 558,153.42 and 225,611

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Solution

The fourth proportional to 404,459, 558,153.42 and 225,611 is: 311,343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,459 : 558,153.42 = 225,611 : x
  2. Step 2: Convert to fraction form
    404,459/558,153.42 = 225,611/x
  3. Step 3: Cross multiply
    404,459x = 558,153.42 × 225,611
  4. Step 4: Simplify right side
    404,459x = 125,925,551,239.62
  5. Step 5: Solve for x
    x = 125,925,551,239.62/404,459
  6. Step 6: Final answer
    x = 311,343.18

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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.