Home / 489,217.20-733,825.80-209,281.20

Finding the Fourth Proportional to 489,217.20, 733,825.80 and 209,281.20

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Solution

The fourth proportional to 489,217.20, 733,825.80 and 209,281.20 is: 313,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,217.20 : 733,825.80 = 209,281.20 : x
  2. Step 2: Convert to fraction form
    489,217.20/733,825.80 = 209,281.20/x
  3. Step 3: Cross multiply
    489,217.20x = 733,825.80 × 209,281.20
  4. Step 4: Simplify right side
    489,217.20x = 153,575,944,014.96
  5. Step 5: Solve for x
    x = 153,575,944,014.96/489,217.20
  6. Step 6: Final answer
    x = 313,921.80

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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.