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Finding the Fourth Proportional to 352,438.73, 486,364.22 and 191,293.78

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Solution

The fourth proportional to 352,438.73, 486,364.22 and 191,293.78 is: 263,984.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,438.73 : 486,364.22 = 191,293.78 : x
  2. Step 2: Convert to fraction form
    352,438.73/486,364.22 = 191,293.78/x
  3. Step 3: Cross multiply
    352,438.73x = 486,364.22 × 191,293.78
  4. Step 4: Simplify right side
    352,438.73x = 93,038,446,712.26
  5. Step 5: Solve for x
    x = 93,038,446,712.26/352,438.73
  6. Step 6: Final answer
    x = 263,984.74

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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.