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Finding the Fourth Proportional to 489,190.80, 733,859.10 and 173,621.28

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Solution

The fourth proportional to 489,190.80, 733,859.10 and 173,621.28 is: 260,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,190.80 : 733,859.10 = 173,621.28 : x
  2. Step 2: Convert to fraction form
    489,190.80/733,859.10 = 173,621.28/x
  3. Step 3: Cross multiply
    489,190.80x = 733,859.10 × 173,621.28
  4. Step 4: Simplify right side
    489,190.80x = 127,413,556,281.65
  5. Step 5: Solve for x
    x = 127,413,556,281.65/489,190.80
  6. Step 6: Final answer
    x = 260,457.79

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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.