Home / 286,111.08-394,819.20-157,046.40

Finding the Fourth Proportional to 286,111.08, 394,819.20 and 157,046.40

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Solution

The fourth proportional to 286,111.08, 394,819.20 and 157,046.40 is: 216,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,111.08 : 394,819.20 = 157,046.40 : x
  2. Step 2: Convert to fraction form
    286,111.08/394,819.20 = 157,046.40/x
  3. Step 3: Cross multiply
    286,111.08x = 394,819.20 × 157,046.40
  4. Step 4: Simplify right side
    286,111.08x = 62,004,934,010.88
  5. Step 5: Solve for x
    x = 62,004,934,010.88/286,111.08
  6. Step 6: Final answer
    x = 216,716.30

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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.