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Finding the Fourth Proportional to 286,112.96, 394,830.96 and 158,793.92

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Solution

The fourth proportional to 286,112.96, 394,830.96 and 158,793.92 is: 219,132.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,112.96 : 394,830.96 = 158,793.92 : x
  2. Step 2: Convert to fraction form
    286,112.96/394,830.96 = 158,793.92/x
  3. Step 3: Cross multiply
    286,112.96x = 394,830.96 × 158,793.92
  4. Step 4: Simplify right side
    286,112.96x = 62,696,755,875.76
  5. Step 5: Solve for x
    x = 62,696,755,875.76/286,112.96
  6. Step 6: Final answer
    x = 219,132.88

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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.