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Finding the Fourth Proportional to 326,573.23, 489,890.76 and 126,909.01

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Solution

The fourth proportional to 326,573.23, 489,890.76 and 126,909.01 is: 190,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,573.23 : 489,890.76 = 126,909.01 : x
  2. Step 2: Convert to fraction form
    326,573.23/489,890.76 = 126,909.01/x
  3. Step 3: Cross multiply
    326,573.23x = 489,890.76 × 126,909.01
  4. Step 4: Simplify right side
    326,573.23x = 62,171,553,128.61
  5. Step 5: Solve for x
    x = 62,171,553,128.61/326,573.23
  6. Step 6: Final answer
    x = 190,375.53

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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.