Home / 287,142.24-396,269.28-166,288.80

Finding the Fourth Proportional to 287,142.24, 396,269.28 and 166,288.80

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Solution

The fourth proportional to 287,142.24, 396,269.28 and 166,288.80 is: 229,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,142.24 : 396,269.28 = 166,288.80 : x
  2. Step 2: Convert to fraction form
    287,142.24/396,269.28 = 166,288.80/x
  3. Step 3: Cross multiply
    287,142.24x = 396,269.28 × 166,288.80
  4. Step 4: Simplify right side
    287,142.24x = 65,895,143,048.06
  5. Step 5: Solve for x
    x = 65,895,143,048.06/287,142.24
  6. Step 6: Final answer
    x = 229,486.07

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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.