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Finding the Fourth Proportional to 423,125.61, 634,793.49 and 209,993.55

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Solution

The fourth proportional to 423,125.61, 634,793.49 and 209,993.55 is: 315,042.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,125.61 : 634,793.49 = 209,993.55 : x
  2. Step 2: Convert to fraction form
    423,125.61/634,793.49 = 209,993.55/x
  3. Step 3: Cross multiply
    423,125.61x = 634,793.49 × 209,993.55
  4. Step 4: Simplify right side
    423,125.61x = 133,302,538,481.99
  5. Step 5: Solve for x
    x = 133,302,538,481.99/423,125.61
  6. Step 6: Final answer
    x = 315,042.47

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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.