Home / 258,579.20-387,710.04-100,623.80

Finding the Fourth Proportional to 258,579.20, 387,710.04 and 100,623.80

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Solution

The fourth proportional to 258,579.20, 387,710.04 and 100,623.80 is: 150,873.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,579.20 : 387,710.04 = 100,623.80 : x
  2. Step 2: Convert to fraction form
    258,579.20/387,710.04 = 100,623.80/x
  3. Step 3: Cross multiply
    258,579.20x = 387,710.04 × 100,623.80
  4. Step 4: Simplify right side
    258,579.20x = 39,012,857,522.95
  5. Step 5: Solve for x
    x = 39,012,857,522.95/258,579.20
  6. Step 6: Final answer
    x = 150,873.92

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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.