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Finding the Fourth Proportional to 489,128.60, 733,911.60 and 173,811.80

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Solution

The fourth proportional to 489,128.60, 733,911.60 and 173,811.80 is: 260,795.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,128.60 : 733,911.60 = 173,811.80 : x
  2. Step 2: Convert to fraction form
    489,128.60/733,911.60 = 173,811.80/x
  3. Step 3: Cross multiply
    489,128.60x = 733,911.60 × 173,811.80
  4. Step 4: Simplify right side
    489,128.60x = 127,562,496,236.88
  5. Step 5: Solve for x
    x = 127,562,496,236.88/489,128.60
  6. Step 6: Final answer
    x = 260,795.42

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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.