Home / 258,521.20-387,623.04-100,565.56

Finding the Fourth Proportional to 258,521.20, 387,623.04 and 100,565.56

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Solution

The fourth proportional to 258,521.20, 387,623.04 and 100,565.56 is: 150,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,521.20 : 387,623.04 = 100,565.56 : x
  2. Step 2: Convert to fraction form
    258,521.20/387,623.04 = 100,565.56/x
  3. Step 3: Cross multiply
    258,521.20x = 387,623.04 × 100,565.56
  4. Step 4: Simplify right side
    258,521.20x = 38,981,528,086.50
  5. Step 5: Solve for x
    x = 38,981,528,086.50/258,521.20
  6. Step 6: Final answer
    x = 150,786.58

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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.