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Finding the Fourth Proportional to 352,439.73, 486,365.60 and 191,294.78

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Solution

The fourth proportional to 352,439.73, 486,365.60 and 191,294.78 is: 263,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,439.73 : 486,365.60 = 191,294.78 : x
  2. Step 2: Convert to fraction form
    352,439.73/486,365.60 = 191,294.78/x
  3. Step 3: Cross multiply
    352,439.73x = 486,365.60 × 191,294.78
  4. Step 4: Simplify right side
    352,439.73x = 93,039,197,063.27
  5. Step 5: Solve for x
    x = 93,039,197,063.27/352,439.73
  6. Step 6: Final answer
    x = 263,986.12

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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.