Home / 287,435.63-396,661.89-172,716.19

Finding the Fourth Proportional to 287,435.63, 396,661.89 and 172,716.19

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Solution

The fourth proportional to 287,435.63, 396,661.89 and 172,716.19 is: 238,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,435.63 : 396,661.89 = 172,716.19 : x
  2. Step 2: Convert to fraction form
    287,435.63/396,661.89 = 172,716.19/x
  3. Step 3: Cross multiply
    287,435.63x = 396,661.89 × 172,716.19
  4. Step 4: Simplify right side
    287,435.63x = 68,509,930,359.00
  5. Step 5: Solve for x
    x = 68,509,930,359.00/287,435.63
  6. Step 6: Final answer
    x = 238,348.78

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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.