Home / 287,208.29-396,331.92-158,121.63

Finding the Fourth Proportional to 287,208.29, 396,331.92 and 158,121.63

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Solution

The fourth proportional to 287,208.29, 396,331.92 and 158,121.63 is: 218,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,208.29 : 396,331.92 = 158,121.63 : x
  2. Step 2: Convert to fraction form
    287,208.29/396,331.92 = 158,121.63/x
  3. Step 3: Cross multiply
    287,208.29x = 396,331.92 × 158,121.63
  4. Step 4: Simplify right side
    287,208.29x = 62,668,649,211.43
  5. Step 5: Solve for x
    x = 62,668,649,211.43/287,208.29
  6. Step 6: Final answer
    x = 218,199.30

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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.