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Finding the Fourth Proportional to 575,576.40, 862,872.32 and 220,845

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Solution

The fourth proportional to 575,576.40, 862,872.32 and 220,845 is: 331,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,576.40 : 862,872.32 = 220,845 : x
  2. Step 2: Convert to fraction form
    575,576.40/862,872.32 = 220,845/x
  3. Step 3: Cross multiply
    575,576.40x = 862,872.32 × 220,845
  4. Step 4: Simplify right side
    575,576.40x = 190,561,037,510.40
  5. Step 5: Solve for x
    x = 190,561,037,510.40/575,576.40
  6. Step 6: Final answer
    x = 331,078.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.