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Finding the Fourth Proportional to 258,450.20, 387,387.30 and 100,626.20

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Solution

The fourth proportional to 258,450.20, 387,387.30 and 100,626.20 is: 150,827.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,450.20 : 387,387.30 = 100,626.20 : x
  2. Step 2: Convert to fraction form
    258,450.20/387,387.30 = 100,626.20/x
  3. Step 3: Cross multiply
    258,450.20x = 387,387.30 × 100,626.20
  4. Step 4: Simplify right side
    258,450.20x = 38,981,311,927.26
  5. Step 5: Solve for x
    x = 38,981,311,927.26/258,450.20
  6. Step 6: Final answer
    x = 150,827.17

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1.5x scale

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.