Home / 285,430.20-393,906.18-158,105.80

Finding the Fourth Proportional to 285,430.20, 393,906.18 and 158,105.80

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Solution

The fourth proportional to 285,430.20, 393,906.18 and 158,105.80 is: 218,192.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,430.20 : 393,906.18 = 158,105.80 : x
  2. Step 2: Convert to fraction form
    285,430.20/393,906.18 = 158,105.80/x
  3. Step 3: Cross multiply
    285,430.20x = 393,906.18 × 158,105.80
  4. Step 4: Simplify right side
    285,430.20x = 62,278,851,713.84
  5. Step 5: Solve for x
    x = 62,278,851,713.84/285,430.20
  6. Step 6: Final answer
    x = 218,192.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.