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Finding the Fourth Proportional to 258,226.92, 387,191.34 and 100,270.98

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Solution

The fourth proportional to 258,226.92, 387,191.34 and 100,270.98 is: 150,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,226.92 : 387,191.34 = 100,270.98 : x
  2. Step 2: Convert to fraction form
    258,226.92/387,191.34 = 100,270.98/x
  3. Step 3: Cross multiply
    258,226.92x = 387,191.34 × 100,270.98
  4. Step 4: Simplify right side
    258,226.92x = 38,824,055,109.31
  5. Step 5: Solve for x
    x = 38,824,055,109.31/258,226.92
  6. Step 6: Final answer
    x = 150,348.60

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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.