Home / 287,353.50-396,563.76-172,667.22

Finding the Fourth Proportional to 287,353.50, 396,563.76 and 172,667.22

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Solution

The fourth proportional to 287,353.50, 396,563.76 and 172,667.22 is: 238,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,353.50 : 396,563.76 = 172,667.22 : x
  2. Step 2: Convert to fraction form
    287,353.50/396,563.76 = 172,667.22/x
  3. Step 3: Cross multiply
    287,353.50x = 396,563.76 × 172,667.22
  4. Step 4: Simplify right side
    287,353.50x = 68,473,561,991.95
  5. Step 5: Solve for x
    x = 68,473,561,991.95/287,353.50
  6. Step 6: Final answer
    x = 238,290.34

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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.