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Finding the Fourth Proportional to 574,625.40, 861,938.10 and 219,456.60

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Solution

The fourth proportional to 574,625.40, 861,938.10 and 219,456.60 is: 329,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,625.40 : 861,938.10 = 219,456.60 : x
  2. Step 2: Convert to fraction form
    574,625.40/861,938.10 = 219,456.60/x
  3. Step 3: Cross multiply
    574,625.40x = 861,938.10 × 219,456.60
  4. Step 4: Simplify right side
    574,625.40x = 189,158,004,836.46
  5. Step 5: Solve for x
    x = 189,158,004,836.46/574,625.40
  6. Step 6: Final answer
    x = 329,184.90

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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.