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Finding the Fourth Proportional to 489,161.33, 733,398.23 and 215,477.65

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Solution

The fourth proportional to 489,161.33, 733,398.23 and 215,477.65 is: 323,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,161.33 : 733,398.23 = 215,477.65 : x
  2. Step 2: Convert to fraction form
    489,161.33/733,398.23 = 215,477.65/x
  3. Step 3: Cross multiply
    489,161.33x = 733,398.23 × 215,477.65
  4. Step 4: Simplify right side
    489,161.33x = 158,030,928,570.00
  5. Step 5: Solve for x
    x = 158,030,928,570.00/489,161.33
  6. Step 6: Final answer
    x = 323,065.05

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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.