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Finding the Fourth Proportional to 286,130.67, 394,878.78 and 158,806.26

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Solution

The fourth proportional to 286,130.67, 394,878.78 and 158,806.26 is: 219,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,130.67 : 394,878.78 = 158,806.26 : x
  2. Step 2: Convert to fraction form
    286,130.67/394,878.78 = 158,806.26/x
  3. Step 3: Cross multiply
    286,130.67x = 394,878.78 × 158,806.26
  4. Step 4: Simplify right side
    286,130.67x = 62,709,222,205.16
  5. Step 5: Solve for x
    x = 62,709,222,205.16/286,130.67
  6. Step 6: Final answer
    x = 219,162.88

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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.